31444297506 has 12 divisors (see below), whose sum is σ = 68129311302. Its totient is φ = 10481432496.

The previous prime is 31444297501. The next prime is 31444297517. The reversal of 31444297506 is 60579244413.

31444297506 is a `hidden beast` number, since 3 + 14 + 4 + 42 + 97 + 506 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23450328225 + 7993969281 = 153135^2 + 89409^2 .

It is not an unprimeable number, because it can be changed into a prime (31444297501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 873452691 + ... + 873452726.

Almost surely, 2^31444297506 is an apocalyptic number.

31444297506 is an abundant number, since it is smaller than the sum of its proper divisors (36685013796).

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

31444297506 is a wasteful number, since it uses less digits than its factorization.

31444297506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746905425 (or 1746905422 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 31444297506 in words is "thirty-one billion, four hundred forty-four million, two hundred ninety-seven thousand, five hundred six".