31435839952 has 160 divisors (see below), whose sum is σ = 72529893504. Its totient is φ = 13035110400.

The previous prime is 31435839937. The next prime is 31435839959. The reversal of 31435839952 is 25993853413.

It is a self number, because there is not a number n which added to its sum of digits gives 31435839952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31435839959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49041552 + ... + 49042192.

Almost surely, 2^31435839952 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 31435839952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36264946752).

31435839952 is an abundant number, since it is smaller than the sum of its proper divisors (41094053552).

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

31435839952 is a wasteful number, since it uses less digits than its factorization.

31435839952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1151 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 52.

The spelling of 31435839952 in words is "thirty-one billion, four hundred thirty-five million, eight hundred thirty-nine thousand, nine hundred fifty-two".