1312404976 has 40 divisors (see below), whose sum is σ = 2637866880. Its totient is φ = 631792896.

The previous prime is 1312404943. The next prime is 1312404991. The reversal of 1312404976 is 6794042131.

It is a congruent number.

It is an unprimeable number.

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, 169281 + ... + 176863.

It is an arithmetic number, because the mean of its divisors is an integer number (65946672).

Almost surely, 2^1312404976 is an apocalyptic number.

1312404976 is a gapful number since it is divisible by the number (16) 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 1312404976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1318933440).

1312404976 is an abundant number, since it is smaller than the sum of its proper divisors (1325461904).

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

1312404976 is a wasteful number, since it uses less digits than its factorization.

1312404976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7993 (or 7987 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1312404976 is about 36227.1303859414. The cubic root of 1312404976 is about 1094.8533615135.

The spelling of 1312404976 in words is "one billion, three hundred twelve million, four hundred four thousand, nine hundred seventy-six".