312166140 has 96 divisors (see below), whose sum is σ = 1026902016. Its totient is φ = 69853440.

The previous prime is 312166103. The next prime is 312166147. The reversal of 312166140 is 41661213.

It is a self number, because there is not a number n which added to its sum of digits gives 312166140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312166147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9612 + ... + 26771.

It is an arithmetic number, because the mean of its divisors is an integer number (10696896).

Almost surely, 2^312166140 is an apocalyptic number.

312166140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312166140 is an abundant number, since it is smaller than the sum of its proper divisors (714735876).

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

312166140 is a wasteful number, since it uses less digits than its factorization.

312166140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36419 (or 36417 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 312166140 is about 17668.2240194084. The cubic root of 312166140 is about 678.3626552465.

The spelling of 312166140 in words is "three hundred twelve million, one hundred sixty-six thousand, one hundred forty".