115307381 has 8 divisors (see below), whose sum is σ = 134844864. Its totient is φ = 96536160.

The previous prime is 115307377. The next prime is 115307389. The reversal of 115307381 is 183703511.

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

It is not a de Polignac number, because 115307381 - 2² = 115307377 is a prime.

It is a super-2 number, since 2×115307381² = 26591584226158322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115307389) 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 7 ways as a sum of consecutive naturals, for example, 191240 + ... + 191841.

It is an arithmetic number, because the mean of its divisors is an integer number (16855608).

Almost surely, 2^115307381 is an apocalyptic number.

It is an amenable number.

115307381 is a deficient number, since it is larger than the sum of its proper divisors (19537483).

115307381 is an equidigital number, since it uses as much as digits as its factorization.

115307381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383131.

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

The square root of 115307381 is about 10738.1274438330. The cubic root of 115307381 is about 486.7272962453.

The spelling of 115307381 in words is "one hundred fifteen million, three hundred seven thousand, three hundred eighty-one".