13362978231 has 54 divisors (see below), whose sum is σ = 20870663112. Its totient is φ = 8235790080.

The previous prime is 13362978221. The next prime is 13362978241. The reversal of 13362978231 is 13287926331.

13362978231 is a `hidden beast` number, since 1 + 336 + 297 + 8 + 23 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (13362978221) and next prime (13362978241).

It is not a de Polignac number, because 13362978231 - 2⁵ = 13362978199 is a prime.

It is a super-2 number, since 2×13362978231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13362978221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 49676365 + ... + 49676633.

Almost surely, 2^13362978231 is an apocalyptic number.

13362978231 is a deficient number, since it is larger than the sum of its proper divisors (7507684881).

13362978231 is an equidigital number, since it uses as much as digits as its factorization.

13362978231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 360 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The spelling of 13362978231 in words is "thirteen billion, three hundred sixty-two million, nine hundred seventy-eight thousand, two hundred thirty-one".