121303231 has 4 divisors (see below), whose sum is σ = 138632272. Its totient is φ = 103974192.

The previous prime is 121303223. The next prime is 121303241. The reversal of 121303231 is 132303121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132303121 = 2269 ⋅58309.

It is not a de Polignac number, because 121303231 - 2³ = 121303223 is a prime.

It is a super-2 number, since 2×121303231² = 29428947702078722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303241) 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, 8664510 + ... + 8664523.

It is an arithmetic number, because the mean of its divisors is an integer number (34658068).

Almost surely, 2^121303231 is an apocalyptic number.

121303231 is a deficient number, since it is larger than the sum of its proper divisors (17329041).

121303231 is an equidigital number, since it uses as much as digits as its factorization.

121303231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17329040.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 121303231 is about 11013.7746027418. The cubic root of 121303231 is about 495.0215696481.

Adding to 121303231 its reverse (132303121), we get a palindrome (253606352).

The spelling of 121303231 in words is "one hundred twenty-one million, three hundred three thousand, two hundred thirty-one".