2421331231 has 4 divisors (see below), whose sum is σ = 2641452264. Its totient is φ = 2201210200.

The previous prime is 2421331223. The next prime is 2421331243. The reversal of 2421331231 is 1321331242.

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

It is a cyclic number.

It is not a de Polignac number, because 2421331231 - 2³ = 2421331223 is a prime.

It is a super-2 number, since 2×2421331231² = 11725689860431950722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421331261) 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, 110060500 + ... + 110060521.

It is an arithmetic number, because the mean of its divisors is an integer number (660363066).

Almost surely, 2^2421331231 is an apocalyptic number.

2421331231 is a deficient number, since it is larger than the sum of its proper divisors (220121033).

2421331231 is a wasteful number, since it uses less digits than its factorization.

2421331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220121032.

The product of its digits is 864, while the sum is 22.

The square root of 2421331231 is about 49207.0242038675. The cubic root of 2421331231 is about 1342.8208252013.

Adding to 2421331231 its reverse (1321331242), we get a palindrome (3742662473).

The spelling of 2421331231 in words is "two billion, four hundred twenty-one million, three hundred thirty-one thousand, two hundred thirty-one".