311301231012031 has 32 divisors (see below), whose sum is σ = 340192169856000. Its totient is φ = 283154496992640.

The previous prime is 311301231011971. The next prime is 311301231012041. The reversal of 311301231012031 is 130210132103113.

It is a de Polignac number, because none of the positive numbers 2^k-311301231012031 is a prime.

It is a super-2 number, since 2×311301231012031² (a number of 30 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 = 311301231011993 and 311301231012011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311301231012041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140953180 + ... + 143144686.

It is an arithmetic number, because the mean of its divisors is an integer number (10631005308000).

Almost surely, 2^{311301231012031} is an apocalyptic number.

311301231012031 is a deficient number, since it is larger than the sum of its proper divisors (28890938843969).

311301231012031 is a wasteful number, since it uses less digits than its factorization.

311301231012031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192239.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 311301231012031 its reverse (130210132103113), we get a palindrome (441511363115144).

The spelling of 311301231012031 in words is "three hundred eleven trillion, three hundred one billion, two hundred thirty-one million, twelve thousand, thirty-one".