113640623 has 2 divisors, whose sum is σ = 113640624. Its totient is φ = 113640622.

The previous prime is 113640617. The next prime is 113640671. The reversal of 113640623 is 326046311.

It is a weak prime.

It is an emirp because it is prime and its reverse (326046311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113640623 - 2⁶ = 113640559 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 113640592 and 113640601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113640673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56820311 + 56820312.

It is an arithmetic number, because the mean of its divisors is an integer number (56820312).

Almost surely, 2^113640623 is an apocalyptic number.

113640623 is a deficient number, since it is larger than the sum of its proper divisors (1).

113640623 is an equidigital number, since it uses as much as digits as its factorization.

113640623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 113640623 is about 10660.2355977717. The cubic root of 113640623 is about 484.3707047167.

Adding to 113640623 its reverse (326046311), we get a palindrome (439686934).

The spelling of 113640623 in words is "one hundred thirteen million, six hundred forty thousand, six hundred twenty-three".