115421331 has 16 divisors (see below), whose sum is σ = 160833024. Its totient is φ = 73555104.

The previous prime is 115421321. The next prime is 115421351. The reversal of 115421331 is 133124511.

It is not a de Polignac number, because 115421331 - 2⁷ = 115421203 is a prime.

It is a super-2 number, since 2×115421331² = 26644167299623122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115421298 and 115421307.

It is not an unprimeable number, because it can be changed into a prime (115421311) 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, 3456 + ... + 15581.

It is an arithmetic number, because the mean of its divisors is an integer number (10052064).

Almost surely, 2^115421331 is an apocalyptic number.

115421331 is a deficient number, since it is larger than the sum of its proper divisors (45411693).

115421331 is a wasteful number, since it uses less digits than its factorization.

115421331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19130.

The product of its digits is 360, while the sum is 21.

The square root of 115421331 is about 10743.4319935484. The cubic root of 115421331 is about 486.8875759980.

Adding to 115421331 its reverse (133124511), we get a palindrome (248545842).

The spelling of 115421331 in words is "one hundred fifteen million, four hundred twenty-one thousand, three hundred thirty-one".