31373538352 has 80 divisors (see below), whose sum is σ = 69540986592. Its totient is φ = 13583462400.

The previous prime is 31373538323. The next prime is 31373538367. The reversal of 31373538352 is 25383537313.

It is a junction number, because it is equal to n+sod(n) for n = 31373538299 and 31373538308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1071102 + ... + 1100002.

Almost surely, 2^31373538352 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 31373538352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34770493296).

31373538352 is an abundant number, since it is smaller than the sum of its proper divisors (38167448240).

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

31373538352 is a wasteful number, since it uses less digits than its factorization.

31373538352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29246 (or 29240 counting only the distinct ones).

The product of its digits is 680400, while the sum is 43.

The spelling of 31373538352 in words is "thirty-one billion, three hundred seventy-three million, five hundred thirty-eight thousand, three hundred fifty-two".