131115431553 has 16 divisors (see below), whose sum is σ = 186351052800. Its totient is φ = 81761518800.

The previous prime is 131115431543. The next prime is 131115431563. The reversal of 131115431553 is 355134511131.

It is an interprime number because it is at equal distance from previous prime (131115431543) and next prime (131115431563).

It is not a de Polignac number, because 131115431553 - 2¹⁰ = 131115430529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131115431543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14554173 + ... + 14563178.

It is an arithmetic number, because the mean of its divisors is an integer number (11646940800).

Almost surely, 2^131115431553 is an apocalyptic number.

It is an amenable number.

131115431553 is a deficient number, since it is larger than the sum of its proper divisors (55235621247).

131115431553 is a wasteful number, since it uses less digits than its factorization.

131115431553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29117452.

The product of its digits is 13500, while the sum is 33.

Adding to 131115431553 its reverse (355134511131), we get a palindrome (486249942684).

The spelling of 131115431553 in words is "one hundred thirty-one billion, one hundred fifteen million, four hundred thirty-one thousand, five hundred fifty-three".