13201431631 has 8 divisors (see below), whose sum is σ = 13408934144. Its totient is φ = 12994237080.

The previous prime is 13201431577. The next prime is 13201431637. The reversal of 13201431631 is 13613410231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13201431631 - 2⁹ = 13201431119 is a prime.

It is a super-2 number, since 2×13201431631² (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 = 13201431596 and 13201431605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201431637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10186 + ... + 162808.

It is an arithmetic number, because the mean of its divisors is an integer number (1676116768).

Almost surely, 2^13201431631 is an apocalyptic number.

13201431631 is a deficient number, since it is larger than the sum of its proper divisors (207502513).

13201431631 is a wasteful number, since it uses less digits than its factorization.

13201431631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153981.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 13201431631 its reverse (13613410231), we get a palindrome (26814841862).

The spelling of 13201431631 in words is "thirteen billion, two hundred one million, four hundred thirty-one thousand, six hundred thirty-one".