31346480 has 80 divisors (see below), whose sum is σ = 80352000. Its totient is φ = 11278080.

The previous prime is 31346473. The next prime is 31346501. The reversal of 31346480 is 8464313.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157421 + ... + 157619.

It is an arithmetic number, because the mean of its divisors is an integer number (1004400).

Almost surely, 2^31346480 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 31346480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40176000).

31346480 is an abundant number, since it is smaller than the sum of its proper divisors (49005520).

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

31346480 is a wasteful number, since it uses less digits than its factorization.

31346480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 31346480 is about 5598.7927270082. The cubic root of 31346480 is about 315.3040819406.

The spelling of 31346480 in words is "thirty-one million, three hundred forty-six thousand, four hundred eighty".