31432031488 has 108 divisors (see below), whose sum is σ = 74116159488. Its totient is φ = 13188065280.

The previous prime is 31432031483. The next prime is 31432031509. The reversal of 31432031488 is 88413023413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31432031483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442881 + ... + 508927.

It is an arithmetic number, because the mean of its divisors is an integer number (686260736).

Almost surely, 2^31432031488 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 31432031488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37058079744).

31432031488 is an abundant number, since it is smaller than the sum of its proper divisors (42684128000).

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

31432031488 is a wasteful number, since it uses less digits than its factorization.

31432031488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66100 (or 66073 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 31432031488 in words is "thirty-one billion, four hundred thirty-two million, thirty-one thousand, four hundred eighty-eight".