115431005 has 8 divisors (see below), whose sum is σ = 140186592. Its totient is φ = 91231888.

The previous prime is 115430999. The next prime is 115431007. The reversal of 115431005 is 500134511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115431005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115431007) 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, 138659 + ... + 139488.

It is an arithmetic number, because the mean of its divisors is an integer number (17523324).

Almost surely, 2^115431005 is an apocalyptic number.

It is an amenable number.

115431005 is a deficient number, since it is larger than the sum of its proper divisors (24755587).

115431005 is an equidigital number, since it uses as much as digits as its factorization.

115431005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278235.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 115431005 is about 10743.8822126827. The cubic root of 115431005 is about 486.9011783907.

Adding to 115431005 its reverse (500134511), we get a palindrome (615565516).

The spelling of 115431005 in words is "one hundred fifteen million, four hundred thirty-one thousand, five".