612131144 has 16 divisors (see below), whose sum is σ = 1174438320. Its totient is φ = 298947600.

The previous prime is 612131137. The next prime is 612131183. The reversal of 612131144 is 441131216.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 889382 + ... + 890069.

It is an arithmetic number, because the mean of its divisors is an integer number (73402395).

Almost surely, 2^612131144 is an apocalyptic number.

It is an amenable number.

612131144 is a deficient number, since it is larger than the sum of its proper divisors (562307176).

612131144 is a wasteful number, since it uses less digits than its factorization.

612131144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779500 (or 1779496 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 612131144 is about 24741.2842027248. The cubic root of 612131144 is about 849.0791152515.

The spelling of 612131144 in words is "six hundred twelve million, one hundred thirty-one thousand, one hundred forty-four".