115131647 has 4 divisors (see below), whose sum is σ = 115171680. Its totient is φ = 115091616.

The previous prime is 115131589. The next prime is 115131671. The reversal of 115131647 is 746131511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115131647 - 2⁸ = 115131391 is a prime.

It is a super-2 number, since 2×115131647² = 26510592281865218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115131047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15338 + ... + 21575.

It is an arithmetic number, because the mean of its divisors is an integer number (28792920).

Almost surely, 2^115131647 is an apocalyptic number.

115131647 is a deficient number, since it is larger than the sum of its proper divisors (40033).

115131647 is an equidigital number, since it uses as much as digits as its factorization.

115131647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40032.

The product of its digits is 2520, while the sum is 29.

The square root of 115131647 is about 10729.9416121431. The cubic root of 115131647 is about 486.4799052466.

The spelling of 115131647 in words is "one hundred fifteen million, one hundred thirty-one thousand, six hundred forty-seven".