31550344432 has 20 divisors (see below), whose sum is σ = 61133025976. Its totient is φ = 15774079680.

The previous prime is 31550344429. The next prime is 31550344433. The reversal of 31550344432 is 23444305513.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31550344433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202498 + ... + 322654.

Almost surely, 2^31550344432 is an apocalyptic number.

It is an amenable number.

31550344432 is a deficient number, since it is larger than the sum of its proper divisors (29582681544).

31550344432 is a wasteful number, since it uses less digits than its factorization.

31550344432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136576 (or 136570 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 31550344432 its reverse (23444305513), we get a palindrome (54994649945).

The spelling of 31550344432 in words is "thirty-one billion, five hundred fifty million, three hundred forty-four thousand, four hundred thirty-two".