115239031 has 2 divisors, whose sum is σ = 115239032. Its totient is φ = 115239030.

The previous prime is 115238969. The next prime is 115239037. The reversal of 115239031 is 130932511.

It is a strong prime.

It is an emirp because it is prime and its reverse (130932511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115239031 - 2¹¹ = 115236983 is a prime.

It is a super-2 number, since 2×115239031² = 26560068531637922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115238987 and 115239005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115239037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57619515 + 57619516.

It is an arithmetic number, because the mean of its divisors is an integer number (57619516).

Almost surely, 2^115239031 is an apocalyptic number.

115239031 is a deficient number, since it is larger than the sum of its proper divisors (1).

115239031 is an equidigital number, since it uses as much as digits as its factorization.

115239031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 115239031 is about 10734.9443873734. The cubic root of 115239031 is about 486.6311058543.

The spelling of 115239031 in words is "one hundred fifteen million, two hundred thirty-nine thousand, thirty-one".