42232331 has 2 divisors, whose sum is σ = 42232332. Its totient is φ = 42232330.

The previous prime is 42232327. The next prime is 42232339. The reversal of 42232331 is 13323224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42232331 - 2² = 42232327 is a prime.

It is a super-2 number, since 2×42232331² = 3567139563387122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42232339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21116165 + 21116166.

It is an arithmetic number, because the mean of its divisors is an integer number (21116166).

Almost surely, 2^42232331 is an apocalyptic number.

42232331 is a deficient number, since it is larger than the sum of its proper divisors (1).

42232331 is an equidigital number, since it uses as much as digits as its factorization.

42232331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 20.

The square root of 42232331 is about 6498.6407040242. The cubic root of 42232331 is about 348.2424297232.

Adding to 42232331 its reverse (13323224), we get a palindrome (55555555).

The spelling of 42232331 in words is "forty-two million, two hundred thirty-two thousand, three hundred thirty-one".