115402381 has 2 divisors, whose sum is σ = 115402382. Its totient is φ = 115402380.

The previous prime is 115402363. The next prime is 115402393. The reversal of 115402381 is 183204511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67322025 + 48080356 = 8205^2 + 6934^2 .

It is a cyclic number.

It is not a de Polignac number, because 115402381 - 2⁵ = 115402349 is a prime.

It is a super-2 number, since 2×115402381² = 26635419080938322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115402321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57701190 + 57701191.

It is an arithmetic number, because the mean of its divisors is an integer number (57701191).

Almost surely, 2^115402381 is an apocalyptic number.

It is an amenable number.

115402381 is a deficient number, since it is larger than the sum of its proper divisors (1).

115402381 is an equidigital number, since it uses as much as digits as its factorization.

115402381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 115402381 is about 10742.5500231556. The cubic root of 115402381 is about 486.8609286285.

Adding to 115402381 its reverse (183204511), we get a palindrome (298606892).

The spelling of 115402381 in words is "one hundred fifteen million, four hundred two thousand, three hundred eighty-one".