13140333431 has 4 divisors (see below), whose sum is σ = 13149504672. Its totient is φ = 13131162192.

The previous prime is 13140333383. The next prime is 13140333433. The reversal of 13140333431 is 13433304131.

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 13140333431 - 2²² = 13136139127 is a prime.

It is a super-2 number, since 2×13140333431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13140333431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13140333433) 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, 4583471 + ... + 4586336.

It is an arithmetic number, because the mean of its divisors is an integer number (3287376168).

Almost surely, 2^13140333431 is an apocalyptic number.

13140333431 is a deficient number, since it is larger than the sum of its proper divisors (9171241).

13140333431 is an equidigital number, since it uses as much as digits as its factorization.

13140333431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9171240.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 13140333431 its reverse (13433304131), we get a palindrome (26573637562).

The spelling of 13140333431 in words is "thirteen billion, one hundred forty million, three hundred thirty-three thousand, four hundred thirty-one".