115402131 has 16 divisors (see below), whose sum is σ = 184117920. Its totient is φ = 71016480.

The previous prime is 115402129. The next prime is 115402141. The reversal of 115402131 is 131204511.

It is not a de Polignac number, because 115402131 - 2¹ = 115402129 is a prime.

It is a super-2 number, since 2×115402131² = 26635303678682322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115402141) 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, 164040 + ... + 164741.

It is an arithmetic number, because the mean of its divisors is an integer number (11507370).

Almost surely, 2^115402131 is an apocalyptic number.

115402131 is a deficient number, since it is larger than the sum of its proper divisors (68715789).

115402131 is a wasteful number, since it uses less digits than its factorization.

115402131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328803 (or 328797 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 115402131 is about 10742.5383871783. The cubic root of 115402131 is about 486.8605770606.

Adding to 115402131 its reverse (131204511), we get a palindrome (246606642).

The spelling of 115402131 in words is "one hundred fifteen million, four hundred two thousand, one hundred thirty-one".