12311210010031 has 4 divisors (see below), whose sum is σ = 12430736320912. Its totient is φ = 12191683699152.

The previous prime is 12311210009971. The next prime is 12311210010041. The reversal of 12311210010031 is 13001001211321.

It is a happy number.

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-12311210010031 is a prime.

It is a super-2 number, since 2×12311210010031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12311210009987 and 12311210010014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311210010041) 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, 59763155286 + ... + 59763155491.

It is an arithmetic number, because the mean of its divisors is an integer number (3107684080228).

Almost surely, 2^{12311210010031} is an apocalyptic number.

12311210010031 is a deficient number, since it is larger than the sum of its proper divisors (119526310881).

12311210010031 is a wasteful number, since it uses less digits than its factorization.

12311210010031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119526310880.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12311210010031 its reverse (13001001211321), we get a palindrome (25312211221352).

The spelling of 12311210010031 in words is "twelve trillion, three hundred eleven billion, two hundred ten million, ten thousand, thirty-one".