342421331 has 4 divisors (see below), whose sum is σ = 391338672. Its totient is φ = 293503992.

The previous prime is 342421297. The next prime is 342421333. The reversal of 342421331 is 133124243.

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-342421331 is a prime.

It is a super-2 number, since 2×342421331² = 234504735847623122, 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 = 342421297 and 342421306.

It is not an unprimeable number, because it can be changed into a prime (342421333) 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, 24458660 + ... + 24458673.

It is an arithmetic number, because the mean of its divisors is an integer number (97834668).

Almost surely, 2^342421331 is an apocalyptic number.

342421331 is a deficient number, since it is larger than the sum of its proper divisors (48917341).

342421331 is an equidigital number, since it uses as much as digits as its factorization.

342421331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48917340.

The product of its digits is 1728, while the sum is 23.

The square root of 342421331 is about 18504.6299881948. The cubic root of 342421331 is about 699.6061260368.

Adding to 342421331 its reverse (133124243), we get a palindrome (475545574).

The spelling of 342421331 in words is "three hundred forty-two million, four hundred twenty-one thousand, three hundred thirty-one".