1031133231 has 12 divisors (see below), whose sum is σ = 1525742400. Its totient is φ = 670655520.

The previous prime is 1031133227. The next prime is 1031133269. The reversal of 1031133231 is 1323311301.

It is a happy number.

It is not a de Polignac number, because 1031133231 - 2² = 1031133227 is a prime.

It is a super-2 number, since 2×1031133231² = 2126471480144998722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031133281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1396831 + ... + 1397568.

It is an arithmetic number, because the mean of its divisors is an integer number (127145200).

Almost surely, 2^1031133231 is an apocalyptic number.

1031133231 is a deficient number, since it is larger than the sum of its proper divisors (494609169).

1031133231 is a wasteful number, since it uses less digits than its factorization.

1031133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794446 (or 2794443 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1031133231 is about 32111.2633043298. The cubic root of 1031133231 is about 1010.2718710652.

Adding to 1031133231 its reverse (1323311301), we get a palindrome (2354444532).

The spelling of 1031133231 in words is "one billion, thirty-one million, one hundred thirty-three thousand, two hundred thirty-one".