313121332 has 18 divisors (see below), whose sum is σ = 559884962. Its totient is φ = 153225264.

The previous prime is 313121327. The next prime is 313121407. The reversal of 313121332 is 233121313.

It can be written as a sum of positive squares in only one way, i.e., 305690256 + 7431076 = 17484^2 + 2726^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8883 + ... + 26554.

Almost surely, 2^313121332 is an apocalyptic number.

It is an amenable number.

313121332 is a deficient number, since it is larger than the sum of its proper divisors (246763630).

313121332 is a wasteful number, since it uses less digits than its factorization.

313121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35535 (or 35486 counting only the distinct ones).

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

The square root of 313121332 is about 17695.2347257673. The cubic root of 313121332 is about 679.0538542790.

Subtracting from 313121332 its sum of digits (19), we obtain a palindrome (313121313).

Adding to 313121332 its reverse (233121313), we get a palindrome (546242645).

The spelling of 313121332 in words is "three hundred thirteen million, one hundred twenty-one thousand, three hundred thirty-two".