31422640244644 has 24 divisors (see below), whose sum is σ = 59988846153600. Its totient is φ = 14282977978080.

The previous prime is 31422640244623. The next prime is 31422640244717. The reversal of 31422640244644 is 44644204622413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31422640244594 and 31422640244603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19401562 + ... + 20958670.

It is an arithmetic number, because the mean of its divisors is an integer number (2499535256400).

Almost surely, 2^{31422640244644} is an apocalyptic number.

It is an amenable number.

31422640244644 is a deficient number, since it is larger than the sum of its proper divisors (28566205908956).

31422640244644 is a wasteful number, since it uses less digits than its factorization.

31422640244644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015763 (or 2015761 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 46.

The spelling of 31422640244644 in words is "thirty-one trillion, four hundred twenty-two billion, six hundred forty million, two hundred forty-four thousand, six hundred forty-four".