1030131021 has 4 divisors (see below), whose sum is σ = 1373508032. Its totient is φ = 686754012.

The previous prime is 1030131013. The next prime is 1030131041. The reversal of 1030131021 is 1201310301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1030131021 - 2³ = 1030131013 is a prime.

It is a super-2 number, since 2×1030131021² = 2122339840853004882, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1030130988 and 1030131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030131001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171688501 + ... + 171688506.

It is an arithmetic number, because the mean of its divisors is an integer number (343377008).

Almost surely, 2^1030131021 is an apocalyptic number.

It is an amenable number.

1030131021 is a deficient number, since it is larger than the sum of its proper divisors (343377011).

1030131021 is an equidigital number, since it uses as much as digits as its factorization.

1030131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343377010.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1030131021 is about 32095.6542385414. The cubic root of 1030131021 is about 1009.9444536978.

Adding to 1030131021 its reverse (1201310301), we get a palindrome (2231441322).

The spelling of 1030131021 in words is "one billion, thirty million, one hundred thirty-one thousand, twenty-one".