131315553 has 16 divisors (see below), whose sum is σ = 199800960. Its totient is φ = 85177008.

The previous prime is 131315551. The next prime is 131315563. The reversal of 131315553 is 355513131.

It is not a de Polignac number, because 131315553 - 2¹ = 131315551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131315551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64725 + ... + 66722.

It is an arithmetic number, because the mean of its divisors is an integer number (12487560).

Almost surely, 2^131315553 is an apocalyptic number.

It is an amenable number.

131315553 is a deficient number, since it is larger than the sum of its proper divisors (68485407).

131315553 is a wasteful number, since it uses less digits than its factorization.

131315553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131493 (or 131487 counting only the distinct ones).

The product of its digits is 3375, while the sum is 27.

The square root of 131315553 is about 11459.2998477219. The cubic root of 131315553 is about 508.2827710944.

Adding to 131315553 its reverse (355513131), we get a palindrome (486828684).

The spelling of 131315553 in words is "one hundred thirty-one million, three hundred fifteen thousand, five hundred fifty-three".