31011200023 has 4 divisors (see below), whose sum is σ = 31168617480. Its totient is φ = 30853782568.

The previous prime is 31011200009. The next prime is 31011200027. The reversal of 31011200023 is 32000211013.

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 31011200023 - 2¹⁷ = 31011068951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31011199976 and 31011200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011200027) 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, 78708433 + ... + 78708826.

It is an arithmetic number, because the mean of its divisors is an integer number (7792154370).

Almost surely, 2^31011200023 is an apocalyptic number.

31011200023 is a deficient number, since it is larger than the sum of its proper divisors (157417457).

31011200023 is a wasteful number, since it uses less digits than its factorization.

31011200023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157417456.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31011200023 its reverse (32000211013), we get a palindrome (63011411036).

The spelling of 31011200023 in words is "thirty-one billion, eleven million, two hundred thousand, twenty-three".