13413021431 has 4 divisors (see below), whose sum is σ = 13413328752. Its totient is φ = 13412714112.

The previous prime is 13413021409. The next prime is 13413021463. The reversal of 13413021431 is 13412031431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13413021431 is a prime.

It is a super-2 number, since 2×13413021431² (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 = 13413021397 and 13413021406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13413021631) 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, 74651 + ... + 179996.

It is an arithmetic number, because the mean of its divisors is an integer number (3353332188).

Almost surely, 2^13413021431 is an apocalyptic number.

13413021431 is a deficient number, since it is larger than the sum of its proper divisors (307321).

13413021431 is an equidigital number, since it uses as much as digits as its factorization.

13413021431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307320.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 13413021431 its reverse (13412031431), we get a palindrome (26825052862).

The spelling of 13413021431 in words is "thirteen billion, four hundred thirteen million, twenty-one thousand, four hundred thirty-one".