121313423 has 32 divisors (see below), whose sum is σ = 160980480. Its totient is φ = 88560000.

The previous prime is 121313419. The next prime is 121313441. The reversal of 121313423 is 324313121.

It is a cyclic number.

It is not a de Polignac number, because 121313423 - 2² = 121313419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121313395 and 121313404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121313453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147353 + ... + 148173.

It is an arithmetic number, because the mean of its divisors is an integer number (5030640).

Almost surely, 2^121313423 is an apocalyptic number.

121313423 is a deficient number, since it is larger than the sum of its proper divisors (39667057).

121313423 is a wasteful number, since it uses less digits than its factorization.

121313423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959.

The product of its digits is 432, while the sum is 20.

The square root of 121313423 is about 11014.2372863490. The cubic root of 121313423 is about 495.0354333034.

Adding to 121313423 its reverse (324313121), we get a palindrome (445626544).

The spelling of 121313423 in words is "one hundred twenty-one million, three hundred thirteen thousand, four hundred twenty-three".