311432142 has 24 divisors (see below), whose sum is σ = 724557096. Its totient is φ = 88980528.

The previous prime is 311432123. The next prime is 311432179. The reversal of 311432142 is 241234113.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529353 + ... + 529940.

It is an arithmetic number, because the mean of its divisors is an integer number (30189879).

Almost surely, 2^311432142 is an apocalyptic number.

311432142 is an abundant number, since it is smaller than the sum of its proper divisors (413124954).

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

311432142 is a wasteful number, since it uses less digits than its factorization.

311432142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059312 (or 1059305 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 311432142 is about 17647.4400976459. The cubic root of 311432142 is about 677.8305586794.

Adding to 311432142 its reverse (241234113), we get a palindrome (552666255).

The spelling of 311432142 in words is "three hundred eleven million, four hundred thirty-two thousand, one hundred forty-two".