31725105480 has 48 divisors (see below), whose sum is σ = 103106593980. Its totient is φ = 8460028032.

The previous prime is 31725105473. The next prime is 31725105547. The reversal of 31725105480 is 8450152713.

31725105480 is a `hidden beast` number, since 3 + 1 + 72 + 5 + 105 + 480 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 30928849956 + 796255524 = 175866^2 + 28218^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44062287 + ... + 44063006.

Almost surely, 2^31725105480 is an apocalyptic number.

31725105480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31725105480 is an abundant number, since it is smaller than the sum of its proper divisors (71381488500).

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

31725105480 is a wasteful number, since it uses less digits than its factorization.

31725105480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88125310 (or 88125303 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 31725105480 in words is "thirty-one billion, seven hundred twenty-five million, one hundred five thousand, four hundred eighty".