13131004431 has 8 divisors (see below), whose sum is σ = 17880516864. Its totient is φ = 8567747480.

The previous prime is 13131004421. The next prime is 13131004457. The reversal of 13131004431 is 13440013131.

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 13131004431 - 2²³ = 13122615823 is a prime.

It is a super-2 number, since 2×13131004431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13131004398 and 13131004407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131004421) 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, 46563705 + ... + 46563986.

It is an arithmetic number, because the mean of its divisors is an integer number (2235064608).

Almost surely, 2^13131004431 is an apocalyptic number.

13131004431 is a deficient number, since it is larger than the sum of its proper divisors (4749512433).

13131004431 is an equidigital number, since it uses as much as digits as its factorization.

13131004431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93127741.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13131004431 its reverse (13440013131), we get a palindrome (26571017562).

The spelling of 13131004431 in words is "thirteen billion, one hundred thirty-one million, four thousand, four hundred thirty-one".