1312515970 has 16 divisors (see below), whose sum is σ = 2367869760. Its totient is φ = 523819504.

The previous prime is 1312515949. The next prime is 1312515989. The reversal of 1312515970 is 795152131.

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, 143710 + ... + 152569.

It is an arithmetic number, because the mean of its divisors is an integer number (147991860).

Almost surely, 2^1312515970 is an apocalyptic number.

1312515970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312515970 is a deficient number, since it is larger than the sum of its proper divisors (1055353790).

1312515970 is a wasteful number, since it uses less digits than its factorization.

1312515970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296729.

The product of its (nonzero) digits is 9450, while the sum is 34.

The square root of 1312515970 is about 36228.6622717428. The cubic root of 1312515970 is about 1094.8842256473.

The spelling of 1312515970 in words is "one billion, three hundred twelve million, five hundred fifteen thousand, nine hundred seventy".