1311606355023 has 32 divisors (see below), whose sum is σ = 1992774571200. Its totient is φ = 852108364800.

The previous prime is 1311606355021. The next prime is 1311606355043. The reversal of 1311606355023 is 3205536061131.

1311606355023 is a `hidden beast` number, since 1 + 3 + 1 + 16 + 0 + 635 + 5 + 0 + 2 + 3 = 666.

It is not a de Polignac number, because 1311606355023 - 2¹ = 1311606355021 is a prime.

It is a super-2 number, since 2×1311606355023² (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 (1311606355021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302833 + ... + 1647701.

It is an arithmetic number, because the mean of its divisors is an integer number (62274205350).

Almost surely, 2^{1311606355023} is an apocalyptic number.

1311606355023 is a deficient number, since it is larger than the sum of its proper divisors (681168216177).

1311606355023 is a wasteful number, since it uses less digits than its factorization.

1311606355023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345800 (or 1345794 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The spelling of 1311606355023 in words is "one trillion, three hundred eleven billion, six hundred six million, three hundred fifty-five thousand, twenty-three".