312605540 has 24 divisors (see below), whose sum is σ = 706970040. Its totient is φ = 115423488.

The previous prime is 312605533. The next prime is 312605567. The reversal of 312605540 is 45506213.

It can be written as a sum of positive squares in 4 ways, for example, as 11999296 + 300606244 = 3464^2 + 17338^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600905 + ... + 601424.

It is an arithmetic number, because the mean of its divisors is an integer number (29457085).

Almost surely, 2^312605540 is an apocalyptic number.

It is an amenable number.

312605540 is an abundant number, since it is smaller than the sum of its proper divisors (394364500).

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

312605540 is a wasteful number, since it uses less digits than its factorization.

312605540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202351 (or 1202349 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 312605540 is about 17680.6543996539. The cubic root of 312605540 is about 678.6807901195.

The spelling of 312605540 in words is "three hundred twelve million, six hundred five thousand, five hundred forty".