311279231338 has 8 divisors (see below), whose sum is σ = 466994138688. Its totient is φ = 155614518444.

The previous prime is 311279231327. The next prime is 311279231339. The reversal of 311279231338 is 833132972113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×311279231338² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311279231294 and 311279231303.

It is not an unprimeable number, because it can be changed into a prime (311279231339) 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, 12533106 + ... + 12557917.

It is an arithmetic number, because the mean of its divisors is an integer number (58374267336).

Almost surely, 2^311279231338 is an apocalyptic number.

311279231338 is a deficient number, since it is larger than the sum of its proper divisors (155714907350).

311279231338 is a wasteful number, since it uses less digits than its factorization.

311279231338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25097228.

The product of its digits is 163296, while the sum is 43.

The spelling of 311279231338 in words is "three hundred eleven billion, two hundred seventy-nine million, two hundred thirty-one thousand, three hundred thirty-eight".