311323132 has 12 divisors (see below), whose sum is σ = 573490120. Its totient is φ = 147468816.

The previous prime is 311323109. The next prime is 311323141. The reversal of 311323132 is 231323113.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048103 + ... + 2048254.

Almost surely, 2^311323132 is an apocalyptic number.

It is an amenable number.

311323132 is a deficient number, since it is larger than the sum of its proper divisors (262166988).

311323132 is a wasteful number, since it uses less digits than its factorization.

311323132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096380 (or 4096378 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 311323132 is about 17644.3512773919. The cubic root of 311323132 is about 677.7514628700.

Subtracting from 311323132 its sum of digits (19), we obtain a palindrome (311323113).

Adding to 311323132 its reverse (231323113), we get a palindrome (542646245).

The spelling of 311323132 in words is "three hundred eleven million, three hundred twenty-three thousand, one hundred thirty-two".