31422555564 has 72 divisors (see below), whose sum is σ = 78277194240. Its totient is φ = 9805527072.

The previous prime is 31422555559. The next prime is 31422555599. The reversal of 31422555564 is 46555522413.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245697 + ... + 351015.

Almost surely, 2^31422555564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31422555564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39138597120).

31422555564 is an abundant number, since it is smaller than the sum of its proper divisors (46854638676).

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

31422555564 is a wasteful number, since it uses less digits than its factorization.

31422555564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105419 (or 105394 counting only the distinct ones).

The product of its digits is 720000, while the sum is 42.

It can be divided in two parts, 31422 and 555564, that added together give a triangular number (586986 = T₁₀₈₃).

The spelling of 31422555564 in words is "thirty-one billion, four hundred twenty-two million, five hundred fifty-five thousand, five hundred sixty-four".