121341431 has 4 divisors (see below), whose sum is σ = 121566264. Its totient is φ = 121116600.

The previous prime is 121341419. The next prime is 121341457. The reversal of 121341431 is 134143121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121341431 is a prime.

It is a super-2 number, since 2×121341431² = 29447485754255522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121341401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111605 + ... + 112686.

It is an arithmetic number, because the mean of its divisors is an integer number (30391566).

Almost surely, 2^121341431 is an apocalyptic number.

121341431 is a deficient number, since it is larger than the sum of its proper divisors (224833).

121341431 is an equidigital number, since it uses as much as digits as its factorization.

121341431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224832.

The product of its digits is 288, while the sum is 20.

The square root of 121341431 is about 11015.5086582509. The cubic root of 121341431 is about 495.0735271521.

Adding to 121341431 its reverse (134143121), we get a palindrome (255484552).

The spelling of 121341431 in words is "one hundred twenty-one million, three hundred forty-one thousand, four hundred thirty-one".