311230153122 has 96 divisors (see below), whose sum is σ = 778123620288. Its totient is φ = 82442916864.

The previous prime is 311230153111. The next prime is 311230153141. The reversal of 311230153122 is 221351032113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 311230153092 and 311230153101.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129843 + ... + 799574.

It is an arithmetic number, because the mean of its divisors is an integer number (8105454378).

Almost surely, 2^311230153122 is an apocalyptic number.

311230153122 is an abundant number, since it is smaller than the sum of its proper divisors (466893467166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311230153122 is a wasteful number, since it uses less digits than its factorization.

311230153122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929520 (or 929513 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 311230153122 its reverse (221351032113), we get a palindrome (532581185235).

The spelling of 311230153122 in words is "three hundred eleven billion, two hundred thirty million, one hundred fifty-three thousand, one hundred twenty-two".