115603131 has 16 divisors (see below), whose sum is σ = 176373504. Its totient is φ = 65977824.

The previous prime is 115603099. The next prime is 115603139. The reversal of 115603131 is 131306511.

It is not a de Polignac number, because 115603131 - 2⁵ = 115603099 is a prime.

It is a super-2 number, since 2×115603131² = 26728167794006322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 115603098 and 115603107.

It is not an unprimeable number, because it can be changed into a prime (115603139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16981 + ... + 22793.

It is an arithmetic number, because the mean of its divisors is an integer number (11023344).

Almost surely, 2^115603131 is an apocalyptic number.

115603131 is a deficient number, since it is larger than the sum of its proper divisors (60770373).

115603131 is an equidigital number, since it uses as much as digits as its factorization.

115603131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 115603131 is about 10751.8896478712. The cubic root of 115603131 is about 487.1430739124.

Adding to 115603131 its reverse (131306511), we get a palindrome (246909642).

The spelling of 115603131 in words is "one hundred fifteen million, six hundred three thousand, one hundred thirty-one".