311002140123 has 12 divisors (see below), whose sum is σ = 452762522368. Its totient is φ = 205702202160.

The previous prime is 311002140103. The next prime is 311002140149. The reversal of 311002140123 is 321041200113.

It is not a de Polignac number, because 311002140123 - 2⁸ = 311002139867 is a prime.

It is a super-2 number, since 2×311002140123² (a number of 24 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 = 311002140096 and 311002140105.

It is not an unprimeable number, because it can be changed into a prime (311002140103) 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, 136045288 + ... + 136047573.

Almost surely, 2^311002140123 is an apocalyptic number.

311002140123 is a deficient number, since it is larger than the sum of its proper divisors (141760382245).

311002140123 is a wasteful number, since it uses less digits than its factorization.

311002140123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272092994 (or 272092991 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 311002140123 its reverse (321041200113), we get a palindrome (632043340236).

The spelling of 311002140123 in words is "three hundred eleven billion, two million, one hundred forty thousand, one hundred twenty-three".