31415563432 has 96 divisors (see below), whose sum is σ = 67284207360. Its totient is φ = 13623552000.

The previous prime is 31415563411. The next prime is 31415563441. The reversal of 31415563432 is 23436551413.

It is a junction number, because it is equal to n+sod(n) for n = 31415563391 and 31415563400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14536432 + ... + 14538592.

It is an arithmetic number, because the mean of its divisors is an integer number (700877160).

Almost surely, 2^31415563432 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 31415563432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33642103680).

31415563432 is an abundant number, since it is smaller than the sum of its proper divisors (35868643928).

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

31415563432 is a wasteful number, since it uses less digits than its factorization.

31415563432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355 (or 2278 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The spelling of 31415563432 in words is "thirty-one billion, four hundred fifteen million, five hundred sixty-three thousand, four hundred thirty-two".