31006450404 has 60 divisors (see below), whose sum is σ = 81106189164. Its totient is φ = 10329209856.

The previous prime is 31006450403. The next prime is 31006450411. The reversal of 31006450404 is 40405460013.

31006450404 is a `hidden beast` number, since 3 + 10 + 0 + 645 + 0 + 4 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22127157504 + 8879292900 = 148752^2 + 94230^2 .

It is a super-2 number, since 2×31006450404² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (31006450403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 521632 + ... + 578024.

Almost surely, 2^31006450404 is an apocalyptic number.

It is an amenable number.

31006450404 is an abundant number, since it is smaller than the sum of its proper divisors (50099738760).

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

31006450404 is a wasteful number, since it uses less digits than its factorization.

31006450404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58106 (or 58095 counting only the distinct ones).

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

The spelling of 31006450404 in words is "thirty-one billion, six million, four hundred fifty thousand, four hundred four".