31894424900 has 36 divisors (see below), whose sum is σ = 74534820612. Its totient is φ = 11776402560.

The previous prime is 31894424869. The next prime is 31894424929. The reversal of 31894424900 is 942449813.

It can be written as a sum of positive squares in 6 ways, for example, as 4523369536 + 27371055364 = 67256^2 + 165442^2 .

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 11 ways as a sum of consecutive naturals, for example, 12265787 + ... + 12268386.

Almost surely, 2^31894424900 is an apocalyptic number.

It is an amenable number.

31894424900 is an abundant number, since it is smaller than the sum of its proper divisors (42640395712).

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

31894424900 is a wasteful number, since it uses less digits than its factorization.

31894424900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24534200 (or 24534193 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 31894424900 in words is "thirty-one billion, eight hundred ninety-four million, four hundred twenty-four thousand, nine hundred".