13400430631 has 16 divisors (see below), whose sum is σ = 15489612288. Its totient is φ = 11355300000.

The previous prime is 13400430629. The next prime is 13400430647. The reversal of 13400430631 is 13603400431.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13400430631 - 2¹ = 13400430629 is a prime.

It is a super-2 number, since 2×13400430631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13400430596 and 13400430605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13400430031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469006 + ... + 496756.

It is an arithmetic number, because the mean of its divisors is an integer number (968100768).

Almost surely, 2^13400430631 is an apocalyptic number.

13400430631 is a deficient number, since it is larger than the sum of its proper divisors (2089181657).

13400430631 is a wasteful number, since it uses less digits than its factorization.

13400430631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28542.

The product of its (nonzero) digits is 2592, while the sum is 25.

The spelling of 13400430631 in words is "thirteen billion, four hundred million, four hundred thirty thousand, six hundred thirty-one".