13120031 has 8 divisors (see below), whose sum is σ = 13474560. Its totient is φ = 12767832.

The previous prime is 13119983. The next prime is 13120057. The reversal of 13120031 is 13002131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13120031 - 2²² = 8925727 is a prime.

It is a super-2 number, since 2×13120031² = 344270426881922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13119994 and 13120021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19580 + ... + 20238.

It is an arithmetic number, because the mean of its divisors is an integer number (1684320).

Almost surely, 2^13120031 is an apocalyptic number.

13120031 is a deficient number, since it is larger than the sum of its proper divisors (354529).

13120031 is an equidigital number, since it uses as much as digits as its factorization.

13120031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 13120031 is about 3622.1583344741. The cubic root of 13120031 is about 235.8549273582.

Adding to 13120031 its reverse (13002131), we get a palindrome (26122162).

The spelling of 13120031 in words is "thirteen million, one hundred twenty thousand, thirty-one".