115181831 has 8 divisors (see below), whose sum is σ = 116206464. Its totient is φ = 114161400.

The previous prime is 115181827. The next prime is 115181837. The reversal of 115181831 is 138181511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115181831 - 2² = 115181827 is a prime.

It is a super-2 number, since 2×115181831² = 26533708385025122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115181794 and 115181803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115181837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78656 + ... + 80106.

It is an arithmetic number, because the mean of its divisors is an integer number (14525808).

Almost surely, 2^115181831 is an apocalyptic number.

115181831 is a deficient number, since it is larger than the sum of its proper divisors (1024633).

115181831 is a wasteful number, since it uses less digits than its factorization.

115181831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

The product of its digits is 960, while the sum is 29.

The square root of 115181831 is about 10732.2798603093. The cubic root of 115181831 is about 486.5505778546.

The spelling of 115181831 in words is "one hundred fifteen million, one hundred eighty-one thousand, eight hundred thirty-one".