31200011311023 has 12 divisors (see below), whose sum is σ = 45265214650968. Its totient is φ = 20708377550160.

The previous prime is 31200011311013. The next prime is 31200011311033. The reversal of 31200011311023 is 32011311000213.

It is an interprime number because it is at equal distance from previous prime (31200011311013) and next prime (31200011311033).

It is not a de Polignac number, because 31200011311023 - 2⁶ = 31200011310959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31200011310987 and 31200011311005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31200011311013) 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, 7635830388 + ... + 7635834473.

It is an arithmetic number, because the mean of its divisors is an integer number (3772101220914).

Almost surely, 2^{31200011311023} is an apocalyptic number.

31200011311023 is a deficient number, since it is larger than the sum of its proper divisors (14065203339945).

31200011311023 is a wasteful number, since it uses less digits than its factorization.

31200011311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15271665094 (or 15271665091 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31200011311023 its reverse (32011311000213), we get a palindrome (63211322311236).

The spelling of 31200011311023 in words is "thirty-one trillion, two hundred billion, eleven million, three hundred eleven thousand, twenty-three".