13431023553 has 32 divisors (see below), whose sum is σ = 19499875200. Its totient is φ = 8191225856.

The previous prime is 13431023549. The next prime is 13431023579. The reversal of 13431023553 is 35532013431.

It is a cyclic number.

It is not a de Polignac number, because 13431023553 - 2² = 13431023549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13431023553.

It is not an unprimeable number, because it can be changed into a prime (13431023503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242725 + ... + 292877.

It is an arithmetic number, because the mean of its divisors is an integer number (609371100).

Almost surely, 2^13431023553 is an apocalyptic number.

It is an amenable number.

13431023553 is a deficient number, since it is larger than the sum of its proper divisors (6068851647).

13431023553 is a wasteful number, since it uses less digits than its factorization.

13431023553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50321.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 13431023553 its reverse (35532013431), we get a palindrome (48963036984).

The spelling of 13431023553 in words is "thirteen billion, four hundred thirty-one million, twenty-three thousand, five hundred fifty-three".