1312694456 has 48 divisors (see below), whose sum is σ = 2583792960. Its totient is φ = 625173120.

The previous prime is 1312694447. The next prime is 1312694459. The reversal of 1312694456 is 6544962131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312694459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1324121 + ... + 1325111.

It is an arithmetic number, because the mean of its divisors is an integer number (53829020).

Almost surely, 2^1312694456 is an apocalyptic number.

It is an amenable number.

1312694456 is a deficient number, since it is larger than the sum of its proper divisors (1271098504).

1312694456 is a wasteful number, since it uses less digits than its factorization.

1312694456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 1329 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 1312694456 is about 36231.1255138451. The cubic root of 1312694456 is about 1094.9338536526.

The spelling of 1312694456 in words is "one billion, three hundred twelve million, six hundred ninety-four thousand, four hundred fifty-six".