31454432644 has 48 divisors (see below), whose sum is σ = 59548970880. Its totient is φ = 14499541760.

The previous prime is 31454432587. The next prime is 31454432707. The reversal of 31454432644 is 44623445413.

It is a junction number, because it is equal to n+sod(n) for n = 31454432597 and 31454432606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262842 + ... + 363310.

It is an arithmetic number, because the mean of its divisors is an integer number (1240603560).

Almost surely, 2^31454432644 is an apocalyptic number.

It is an amenable number.

31454432644 is a deficient number, since it is larger than the sum of its proper divisors (28094538236).

31454432644 is a wasteful number, since it uses less digits than its factorization.

31454432644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100620 (or 100618 counting only the distinct ones).

The product of its digits is 552960, while the sum is 40.

The spelling of 31454432644 in words is "thirty-one billion, four hundred fifty-four million, four hundred thirty-two thousand, six hundred forty-four".