115222031 has 2 divisors, whose sum is σ = 115222032. Its totient is φ = 115222030.

The previous prime is 115222021. The next prime is 115222049. The reversal of 115222031 is 130222511.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (130222511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115222031 is a prime.

It is a super-2 number, since 2×115222031² = 26552232855529922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115222021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57611015 + 57611016.

It is an arithmetic number, because the mean of its divisors is an integer number (57611016).

Almost surely, 2^115222031 is an apocalyptic number.

115222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

115222031 is an equidigital number, since it uses as much as digits as its factorization.

115222031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 115222031 is about 10734.1525515525. The cubic root of 115222031 is about 486.6071754910.

Adding to 115222031 its reverse (130222511), we get a palindrome (245444542).

The spelling of 115222031 in words is "one hundred fifteen million, two hundred twenty-two thousand, thirty-one".