311155433142 has 32 divisors (see below), whose sum is σ = 625227033600. Its totient is φ = 103232884608.

The previous prime is 311155433123. The next prime is 311155433177. The reversal of 311155433142 is 241334551113.

311155433142 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2870718 + ... + 2977134.

It is an arithmetic number, because the mean of its divisors is an integer number (19538344800).

Almost surely, 2^311155433142 is an apocalyptic number.

311155433142 is an abundant number, since it is smaller than the sum of its proper divisors (314071600458).

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

311155433142 is a wasteful number, since it uses less digits than its factorization.

311155433142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108700.

The product of its digits is 21600, while the sum is 33.

Adding to 311155433142 its reverse (241334551113), we get a palindrome (552489984255).

The spelling of 311155433142 in words is "three hundred eleven billion, one hundred fifty-five million, four hundred thirty-three thousand, one hundred forty-two".