31102313023 has 4 divisors (see below), whose sum is σ = 31117781128. Its totient is φ = 31086844920.

The previous prime is 31102312951. The next prime is 31102313057. The reversal of 31102313023 is 32031320113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31102313023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102313083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7731036 + ... + 7735057.

It is an arithmetic number, because the mean of its divisors is an integer number (7779445282).

Almost surely, 2^31102313023 is an apocalyptic number.

31102313023 is a deficient number, since it is larger than the sum of its proper divisors (15468105).

31102313023 is a wasteful number, since it uses less digits than its factorization.

31102313023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15468104.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31102313023 its reverse (32031320113), we get a palindrome (63133633136).

The spelling of 31102313023 in words is "thirty-one billion, one hundred two million, three hundred thirteen thousand, twenty-three".