312756132 has 48 divisors (see below), whose sum is σ = 790616960. Its totient is φ = 96224544.

The previous prime is 312756121. The next prime is 312756137. The reversal of 312756132 is 231657213.

It is a self number, because there is not a number n which added to its sum of digits gives 312756132.

It is not an unprimeable number, because it can be changed into a prime (312756137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20433 + ... + 32295.

Almost surely, 2^312756132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312756132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395308480).

312756132 is an abundant number, since it is smaller than the sum of its proper divisors (477860828).

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

312756132 is a wasteful number, since it uses less digits than its factorization.

312756132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11909 (or 11881 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 312756132 is about 17684.9125527948. The cubic root of 312756132 is about 678.7897533093.

The spelling of 312756132 in words is "three hundred twelve million, seven hundred fifty-six thousand, one hundred thirty-two".