3131222000 has 40 divisors (see below), whose sum is σ = 7571299632. Its totient is φ = 1252488000.

The previous prime is 3131221987. The next prime is 3131222011. The reversal of 3131222000 is 2221313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780806 + ... + 784805.

Almost surely, 2^3131222000 is an apocalyptic number.

It is an amenable number.

3131222000 is an abundant number, since it is smaller than the sum of its proper divisors (4440077632).

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

3131222000 is a wasteful number, since it uses less digits than its factorization.

3131222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565634 (or 1565618 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3131222000 is about 55957.3230238903. The cubic root of 3131222000 is about 1462.9785318913.

Adding to 3131222000 its reverse (2221313), we get a palindrome (3133443313).

The spelling of 3131222000 in words is "three billion, one hundred thirty-one million, two hundred twenty-two thousand".