13051213431 has 4 divisors (see below), whose sum is σ = 17401617912. Its totient is φ = 8700808952.

The previous prime is 13051213393. The next prime is 13051213457. The reversal of 13051213431 is 13431215031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13051213431 - 2⁶ = 13051213367 is a prime.

It is a super-2 number, since 2×13051213431² (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 (13051213481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175202236 + ... + 2175202241.

It is an arithmetic number, because the mean of its divisors is an integer number (4350404478).

Almost surely, 2^13051213431 is an apocalyptic number.

13051213431 is a deficient number, since it is larger than the sum of its proper divisors (4350404481).

13051213431 is an equidigital number, since it uses as much as digits as its factorization.

13051213431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350404480.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 13051213431 its reverse (13431215031), we get a palindrome (26482428462).

The spelling of 13051213431 in words is "thirteen billion, fifty-one million, two hundred thirteen thousand, four hundred thirty-one".