31031113023 has 12 divisors (see below), whose sum is σ = 44886669048. Its totient is φ = 20657893200.

The previous prime is 31031113019. The next prime is 31031113037. The reversal of 31031113023 is 32031113013.

It is a happy number.

It is not a de Polignac number, because 31031113023 - 2² = 31031113019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31031112987 and 31031113005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031113423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2452965 + ... + 2465582.

It is an arithmetic number, because the mean of its divisors is an integer number (3740555754).

Almost surely, 2^31031113023 is an apocalyptic number.

31031113023 is a deficient number, since it is larger than the sum of its proper divisors (13855556025).

31031113023 is a wasteful number, since it uses less digits than its factorization.

31031113023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919254 (or 4919251 counting only the distinct ones).

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

Adding to 31031113023 its reverse (32031113013), we get a palindrome (63062226036).

The spelling of 31031113023 in words is "thirty-one billion, thirty-one million, one hundred thirteen thousand, twenty-three".