1312708972 has 24 divisors (see below), whose sum is σ = 2358644400. Its totient is φ = 638883840.

The previous prime is 1312708963. The next prime is 1312708973. The reversal of 1312708972 is 2798072131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1312708973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64723 + ... + 82549.

It is an arithmetic number, because the mean of its divisors is an integer number (98276850).

Almost surely, 2^1312708972 is an apocalyptic number.

It is an amenable number.

1312708972 is a deficient number, since it is larger than the sum of its proper divisors (1045935428).

1312708972 is a wasteful number, since it uses less digits than its factorization.

1312708972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18321 (or 18319 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 1312708972 is about 36231.3258382853. The cubic root of 1312708972 is about 1094.9378896263.

The spelling of 1312708972 in words is "one billion, three hundred twelve million, seven hundred eight thousand, nine hundred seventy-two".