31429599444 has 18 divisors (see below), whose sum is σ = 79447043130. Its totient is φ = 10476533136.

The previous prime is 31429599419. The next prime is 31429599451. The reversal of 31429599444 is 44499592413.

31429599444 is a `hidden beast` number, since 3 + 1 + 4 + 2 + 9 + 599 + 4 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30937292100 + 492307344 = 175890^2 + 22188^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 436522179 + ... + 436522250.

Almost surely, 2^31429599444 is an apocalyptic number.

It is an amenable number.

31429599444 is an abundant number, since it is smaller than the sum of its proper divisors (48017443686).

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

31429599444 is a wasteful number, since it uses less digits than its factorization.

31429599444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873044439 (or 873044434 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 31429599444 in words is "thirty-one billion, four hundred twenty-nine million, five hundred ninety-nine thousand, four hundred forty-four".