312190742888 has 32 divisors (see below), whose sum is σ = 590399598600. Its totient is φ = 154756374528.

The previous prime is 312190742869. The next prime is 312190742893. The reversal of 312190742888 is 888247091213.

It can be written as a sum of positive squares in 4 ways, for example, as 312058538884 + 132204004 = 558622^2 + 11498^2 .

It is a super-2 number, since 2×312190742888² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107348 + ... + 797436.

Almost surely, 2^312190742888 is an apocalyptic number.

It is an amenable number.

312190742888 is a deficient number, since it is larger than the sum of its proper divisors (278208855712).

312190742888 is a wasteful number, since it uses less digits than its factorization.

312190742888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690581 (or 690577 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 312190742888 in words is "three hundred twelve billion, one hundred ninety million, seven hundred forty-two thousand, eight hundred eighty-eight".