1313631452656 has 20 divisors (see below), whose sum is σ = 2545182736272. Its totient is φ = 656810101376.

The previous prime is 1313631452641. The next prime is 1313631452657. The reversal of 1313631452656 is 6562541363131.

It is a happy number.

It is a super-2 number, since 2×1313631452656² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313631452657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2088180 + ... + 2643436.

Almost surely, 2^{1313631452656} is an apocalyptic number.

1313631452656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1313631452656 is a deficient number, since it is larger than the sum of its proper divisors (1231551283616).

1313631452656 is a wasteful number, since it uses less digits than its factorization.

1313631452656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703128 (or 703122 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 46.

The spelling of 1313631452656 in words is "one trillion, three hundred thirteen billion, six hundred thirty-one million, four hundred fifty-two thousand, six hundred fifty-six".