312331122 has 36 divisors (see below), whose sum is σ = 707440734. Its totient is φ = 99580800.

The previous prime is 312331109. The next prime is 312331133. The reversal of 312331122 is 221133213.

312331122 is a `hidden beast` number, since 312 + 331 + 1 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 299947761 + 12383361 = 17319^2 + 3519^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 312331095 and 312331104.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6879 + ... + 25922.

Almost surely, 2^312331122 is an apocalyptic number.

312331122 is an abundant number, since it is smaller than the sum of its proper divisors (395109612).

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

312331122 is a wasteful number, since it uses less digits than its factorization.

312331122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32855 (or 32829 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 312331122 is about 17672.8922930006. The cubic root of 312331122 is about 678.4821406771.

Adding to 312331122 its reverse (221133213), we get a palindrome (533464335).

The spelling of 312331122 in words is "three hundred twelve million, three hundred thirty-one thousand, one hundred twenty-two".