115381383 has 16 divisors (see below), whose sum is σ = 166545120. Its totient is φ = 70631424.

The previous prime is 115381379. The next prime is 115381393. The reversal of 115381383 is 383183511.

It is not a de Polignac number, because 115381383 - 2² = 115381379 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115381333) 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, 138 + ... + 15191.

It is an arithmetic number, because the mean of its divisors is an integer number (10409070).

Almost surely, 2^115381383 is an apocalyptic number.

115381383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

115381383 is a deficient number, since it is larger than the sum of its proper divisors (51163737).

115381383 is a wasteful number, since it uses less digits than its factorization.

115381383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15538.

The product of its digits is 8640, while the sum is 33.

The square root of 115381383 is about 10741.5726502221. The cubic root of 115381383 is about 486.8313979672.

It can be divided in two parts, 11538 and 1383, that added together give a palindrome (12921).

The spelling of 115381383 in words is "one hundred fifteen million, three hundred eighty-one thousand, three hundred eighty-three".