13431145245 has 72 divisors (see below), whose sum is σ = 25595843616. Its totient is φ = 5996555712.

The previous prime is 13431145237. The next prime is 13431145267. The reversal of 13431145245 is 54254113431.

It is not a de Polignac number, because 13431145245 - 2³ = 13431145237 is a prime.

It is a super-2 number, since 2×13431145245² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1354074 + ... + 1363956.

It is an arithmetic number, because the mean of its divisors is an integer number (355497828).

Almost surely, 2^13431145245 is an apocalyptic number.

13431145245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13431145245 is a deficient number, since it is larger than the sum of its proper divisors (12164698371).

13431145245 is an equidigital number, since it uses as much as digits as its factorization.

13431145245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9991 (or 9941 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

Adding to 13431145245 its reverse (54254113431), we get a palindrome (67685258676).

The spelling of 13431145245 in words is "thirteen billion, four hundred thirty-one million, one hundred forty-five thousand, two hundred forty-five".