3123391086540 has 72 divisors (see below), whose sum is σ = 9475067085120. Its totient is φ = 832835649024.

The previous prime is 3123391086521. The next prime is 3123391086619. The reversal of 3123391086540 is 456801933213.

3123391086540 is a `hidden beast` number, since 3 + 1 + 23 + 3 + 9 + 1 + 0 + 86 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1494132 + ... + 2911908.

It is an arithmetic number, because the mean of its divisors is an integer number (131598153960).

Almost surely, 2^{3123391086540} is an apocalyptic number.

3123391086540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3123391086540 is an abundant number, since it is smaller than the sum of its proper divisors (6351675998580).

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

3123391086540 is a wasteful number, since it uses less digits than its factorization.

3123391086540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430031 (or 1430026 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 3123391086540 in words is "three trillion, one hundred twenty-three billion, three hundred ninety-one million, eighty-six thousand, five hundred forty".