31326480 has 80 divisors (see below), whose sum is σ = 107909760. Its totient is φ = 8353152.

The previous prime is 31326479. The next prime is 31326517. The reversal of 31326480 is 8462313.

It is a happy number.

31326480 is a `hidden beast` number, since 3 + 13 + 2 + 648 + 0 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 5092 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (1348872).

Almost surely, 2^31326480 is an apocalyptic number.

31326480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31326480 is an abundant number, since it is smaller than the sum of its proper divisors (76583280).

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

31326480 is a wasteful number, since it uses less digits than its factorization.

31326480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14525 (or 14513 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 31326480 is about 5597.0063426800. The cubic root of 31326480 is about 315.2370098348.

Adding to 31326480 its reverse (8462313), we get a palindrome (39788793).

The spelling of 31326480 in words is "thirty-one million, three hundred twenty-six thousand, four hundred eighty".