115120381 has 2 divisors, whose sum is σ = 115120382. Its totient is φ = 115120380.

The previous prime is 115120367. The next prime is 115120393. The reversal of 115120381 is 183021511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110880900 + 4239481 = 10530^2 + 2059^2 .

It is a cyclic number.

It is not a de Polignac number, because 115120381 - 2⁵ = 115120349 is a prime.

It is a super-2 number, since 2×115120381² = 26505404243170322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115120321) 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, 57560190 + 57560191.

It is an arithmetic number, because the mean of its divisors is an integer number (57560191).

Almost surely, 2^115120381 is an apocalyptic number.

It is an amenable number.

115120381 is a deficient number, since it is larger than the sum of its proper divisors (1).

115120381 is an equidigital number, since it uses as much as digits as its factorization.

115120381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 115120381 is about 10729.4166197422. The cubic root of 115120381 is about 486.4640368573.

Adding to 115120381 its reverse (183021511), we get a palindrome (298141892).

The spelling of 115120381 in words is "one hundred fifteen million, one hundred twenty thousand, three hundred eighty-one".