31023113011 has 16 divisors (see below), whose sum is σ = 34960048128. Its totient is φ = 27273585600.

The previous prime is 31023112997. The next prime is 31023113021. The reversal of 31023113011 is 11031132013.

It is a cyclic number.

It is not a de Polignac number, because 31023113011 - 2¹⁷ = 31022981939 is a prime.

It is a super-2 number, since 2×31023113011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31023113021) 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 15 ways as a sum of consecutive naturals, for example, 456910 + ... + 520396.

It is an arithmetic number, because the mean of its divisors is an integer number (2185003008).

Almost surely, 2^31023113011 is an apocalyptic number.

31023113011 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31023113011 is a deficient number, since it is larger than the sum of its proper divisors (3936935117).

31023113011 is a wasteful number, since it uses less digits than its factorization.

31023113011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64962.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31023113011 its reverse (11031132013), we get a palindrome (42054245024).

It can be divided in two parts, 3102 and 3113011, that added together give a palindrome (3116113).

The spelling of 31023113011 in words is "thirty-one billion, twenty-three million, one hundred thirteen thousand, eleven".