115628431 has 2 divisors, whose sum is σ = 115628432. Its totient is φ = 115628430.

The previous prime is 115628417. The next prime is 115628449. The reversal of 115628431 is 134826511.

It is a weak prime.

It is an emirp because it is prime and its reverse (134826511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115628431 - 2¹⁵ = 115595663 is a prime.

It is a super-2 number, since 2×115628431² = 26739868111043522, which contains 22 as substring.

It is equal to p_6606508 and since 115628431 and 6606508 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 115628393 and 115628402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115628531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57814215 + 57814216.

It is an arithmetic number, because the mean of its divisors is an integer number (57814216).

Almost surely, 2^115628431 is an apocalyptic number.

115628431 is a deficient number, since it is larger than the sum of its proper divisors (1).

115628431 is an equidigital number, since it uses as much as digits as its factorization.

115628431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 115628431 is about 10753.0661208792. The cubic root of 115628431 is about 487.1786087654.

The spelling of 115628431 in words is "one hundred fifteen million, six hundred twenty-eight thousand, four hundred thirty-one".