31011031020023 has 4 divisors (see below), whose sum is σ = 31173392439168. Its totient is φ = 30848669600880.

The previous prime is 31011031020017. The next prime is 31011031020041. The reversal of 31011031020023 is 32002013011013.

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

It is a cyclic number.

It is not a de Polignac number, because 31011031020023 - 2⁴ = 31011031020007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31011031019983 and 31011031020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011031020523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81180709286 + ... + 81180709667.

It is an arithmetic number, because the mean of its divisors is an integer number (7793348109792).

Almost surely, 2^{31011031020023} is an apocalyptic number.

31011031020023 is a deficient number, since it is larger than the sum of its proper divisors (162361419145).

31011031020023 is a wasteful number, since it uses less digits than its factorization.

31011031020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162361419144.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31011031020023 its reverse (32002013011013), we get a palindrome (63013044031036).

The spelling of 31011031020023 in words is "thirty-one trillion, eleven billion, thirty-one million, twenty thousand, twenty-three".