2931712920 has 128 divisors (see below), whose sum is σ = 10286784000. Its totient is φ = 740638080.

The previous prime is 2931712919. The next prime is 2931712943. The reversal of 2931712920 is 292171392.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50916 + ... + 91955.

It is an arithmetic number, because the mean of its divisors is an integer number (80365500).

Almost surely, 2^2931712920 is an apocalyptic number.

2931712920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2931712920 is an abundant number, since it is smaller than the sum of its proper divisors (7355071080).

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

2931712920 is a wasteful number, since it uses less digits than its factorization.

2931712920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142910 (or 142900 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 2931712920 is about 54145.2945323968. The cubic root of 2931712920 is about 1431.2224733110. Note that the first 3 decimals are identical.

The spelling of 2931712920 in words is "two billion, nine hundred thirty-one million, seven hundred twelve thousand, nine hundred twenty".