321031422540 has 144 divisors (see below), whose sum is σ = 1058114104320. Its totient is φ = 78486433920.

The previous prime is 321031422539. The next prime is 321031422587. The reversal of 321031422540 is 45224130123.

321031422540 is a `hidden beast` number, since 3 + 2 + 103 + 14 + 2 + 2 + 540 = 666.

It is a super-2 number, since 2×321031422540² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1407994 + ... + 1620033.

Almost surely, 2^321031422540 is an apocalyptic number.

321031422540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321031422540 is an abundant number, since it is smaller than the sum of its proper divisors (737082681780).

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

321031422540 is a wasteful number, since it uses less digits than its factorization.

321031422540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3028092 (or 3028087 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 321031422540 its reverse (45224130123), we get a palindrome (366255552663).

The spelling of 321031422540 in words is "three hundred twenty-one billion, thirty-one million, four hundred twenty-two thousand, five hundred forty".