31626742380 has 24 divisors (see below), whose sum is σ = 88554878832. Its totient is φ = 8433797952.

The previous prime is 31626742361. The next prime is 31626742393. The reversal of 31626742380 is 8324762613.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263556127 + ... + 263556246.

It is an arithmetic number, because the mean of its divisors is an integer number (3689786618).

Almost surely, 2^31626742380 is an apocalyptic number.

31626742380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31626742380 is an abundant number, since it is smaller than the sum of its proper divisors (56928136452).

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

31626742380 is a wasteful number, since it uses less digits than its factorization.

31626742380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527112385 (or 527112383 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 31626742380 in words is "thirty-one billion, six hundred twenty-six million, seven hundred forty-two thousand, three hundred eighty".