121344431 has 8 divisors (see below), whose sum is σ = 137556720. Its totient is φ = 106114752.

The previous prime is 121344407. The next prime is 121344451. The reversal of 121344431 is 134443121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121344431 - 2²⁶ = 54235567 is a prime.

It is a super-2 number, since 2×121344431² = 29448941869427522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121344397 and 121344406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121344451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245390 + ... + 245883.

It is an arithmetic number, because the mean of its divisors is an integer number (17194590).

Almost surely, 2^121344431 is an apocalyptic number.

121344431 is a deficient number, since it is larger than the sum of its proper divisors (16212289).

121344431 is a wasteful number, since it uses less digits than its factorization.

121344431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491305.

The product of its digits is 1152, while the sum is 23.

The square root of 121344431 is about 11015.6448290602. The cubic root of 121344431 is about 495.0776071225.

Adding to 121344431 its reverse (134443121), we get a palindrome (255787552).

The spelling of 121344431 in words is "one hundred twenty-one million, three hundred forty-four thousand, four hundred thirty-one".