31672170540 has 36 divisors (see below), whose sum is σ = 96072251184. Its totient is φ = 8445912096.

The previous prime is 31672170527. The next prime is 31672170557. The reversal of 31672170540 is 4507127613.

It is a happy number.

31672170540 is a `hidden beast` number, since 31 + 6 + 72 + 17 + 0 + 540 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 31672170495 and 31672170504.

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, 87978072 + ... + 87978431.

It is an arithmetic number, because the mean of its divisors is an integer number (2668673644).

Almost surely, 2^31672170540 is an apocalyptic number.

31672170540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31672170540 is an abundant number, since it is smaller than the sum of its proper divisors (64400080644).

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

31672170540 is a wasteful number, since it uses less digits than its factorization.

31672170540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175956518 (or 175956513 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 31672170540 in words is "thirty-one billion, six hundred seventy-two million, one hundred seventy thousand, five hundred forty".