31463680 has 72 divisors (see below), whose sum is σ = 77116032. Its totient is φ = 12294144.

The previous prime is 31463591. The next prime is 31463681. The reversal of 31463680 is 8636413.

It is not an unprimeable number, because it can be changed into a prime (31463681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59899 + ... + 60421.

It is an arithmetic number, because the mean of its divisors is an integer number (1071056).

Almost surely, 2^31463680 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 31463680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38558016).

31463680 is an abundant number, since it is smaller than the sum of its proper divisors (45652352).

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

31463680 is an equidigital number, since it uses as much as digits as its factorization.

31463680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 31463680 is about 5609.2495041672. The cubic root of 31463680 is about 315.6965521536.

The spelling of 31463680 in words is "thirty-one million, four hundred sixty-three thousand, six hundred eighty".