13477273731 has 12 divisors (see below), whose sum is σ = 19518542680. Its totient is φ = 8961140160.

The previous prime is 13477273723. The next prime is 13477273741. The reversal of 13477273731 is 13737277431.

13477273731 is a `hidden beast` number, since 1 + 347 + 7 + 273 + 7 + 31 = 666.

It is not a de Polignac number, because 13477273731 - 2³ = 13477273723 is a prime.

It is a super-2 number, since 2×13477273731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13477273721) 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, 1972150 + ... + 1978971.

Almost surely, 2^13477273731 is an apocalyptic number.

13477273731 is a deficient number, since it is larger than the sum of its proper divisors (6041268949).

13477273731 is a wasteful number, since it uses less digits than its factorization.

13477273731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951506 (or 3951503 counting only the distinct ones).

The product of its digits is 518616, while the sum is 45.

The spelling of 13477273731 in words is "thirteen billion, four hundred seventy-seven million, two hundred seventy-three thousand, seven hundred thirty-one".