115501431 has 8 divisors (see below), whose sum is σ = 154067184. Its totient is φ = 76968320.

The previous prime is 115501427. The next prime is 115501433. The reversal of 115501431 is 134105511.

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 115501431 - 2² = 115501427 is a prime.

It is a super-2 number, since 2×115501431² = 26681161126095522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115501398 and 115501407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115501433) 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, 1855 + ... + 15311.

It is an arithmetic number, because the mean of its divisors is an integer number (19258398).

Almost surely, 2^115501431 is an apocalyptic number.

115501431 is a deficient number, since it is larger than the sum of its proper divisors (38565753).

115501431 is a wasteful number, since it uses less digits than its factorization.

115501431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16321.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 115501431 is about 10747.1592060414. The cubic root of 115501431 is about 487.0001798998. Note that the first 3 decimals are identical.

Adding to 115501431 its reverse (134105511), we get a palindrome (249606942).

The spelling of 115501431 in words is "one hundred fifteen million, five hundred one thousand, four hundred thirty-one".