121623713 has 2 divisors, whose sum is σ = 121623714. Its totient is φ = 121623712.

The previous prime is 121623659. The next prime is 121623791. The reversal of 121623713 is 317326121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84511249 + 37112464 = 9193^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 121623713 - 2¹⁴ = 121607329 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (121623113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60811856 + 60811857.

It is an arithmetic number, because the mean of its divisors is an integer number (60811857).

Almost surely, 2^121623713 is an apocalyptic number.

It is an amenable number.

121623713 is a deficient number, since it is larger than the sum of its proper divisors (1).

121623713 is an equidigital number, since it uses as much as digits as its factorization.

121623713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 121623713 is about 11028.3141504040. The cubic root of 121623713 is about 495.4571337376.

Adding to 121623713 its reverse (317326121), we get a palindrome (438949834).

The spelling of 121623713 in words is "one hundred twenty-one million, six hundred twenty-three thousand, seven hundred thirteen".