312487380 has 72 divisors (see below), whose sum is σ = 950800032. Its totient is φ = 83073216.

The previous prime is 312487367. The next prime is 312487391. The reversal of 312487380 is 83784213.

312487380 is a `hidden beast` number, since 31 + 248 + 7 + 380 = 666.

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 23 ways as a sum of consecutive naturals, for example, 59959 + ... + 64961.

It is an arithmetic number, because the mean of its divisors is an integer number (13205556).

Almost surely, 2^312487380 is an apocalyptic number.

312487380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312487380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475400016).

312487380 is an abundant number, since it is smaller than the sum of its proper divisors (638312652).

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

312487380 is a wasteful number, since it uses less digits than its factorization.

312487380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5365 (or 5360 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 312487380 is about 17677.3125785567. The cubic root of 312487380 is about 678.5952691057.

The spelling of 312487380 in words is "three hundred twelve million, four hundred eighty-seven thousand, three hundred eighty".