31838775232 has 56 divisors (see below), whose sum is σ = 69219878832. Its totient is φ = 14409984000.

The previous prime is 31838775223. The next prime is 31838775233. The reversal of 31838775232 is 23257783813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31838775233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66982 + ... + 261082.

Almost surely, 2^31838775232 is an apocalyptic number.

31838775232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31838775232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34609939416).

31838775232 is an abundant number, since it is smaller than the sum of its proper divisors (37381103600).

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

31838775232 is a wasteful number, since it uses less digits than its factorization.

31838775232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194357 (or 194347 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The spelling of 31838775232 in words is "thirty-one billion, eight hundred thirty-eight million, seven hundred seventy-five thousand, two hundred thirty-two".