42301631 has 2 divisors, whose sum is σ = 42301632. Its totient is φ = 42301630.

The previous prime is 42301621. The next prime is 42301673. The reversal of 42301631 is 13610324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42301631 is a prime.

It is a super-2 number, since 2×42301631² = 3578855970520322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42301621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21150815 + 21150816.

It is an arithmetic number, because the mean of its divisors is an integer number (21150816).

Almost surely, 2^42301631 is an apocalyptic number.

42301631 is a deficient number, since it is larger than the sum of its proper divisors (1).

42301631 is an equidigital number, since it uses as much as digits as its factorization.

42301631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 42301631 is about 6503.9704027617. The cubic root of 42301631 is about 348.4328052924.

Adding to 42301631 its reverse (13610324), we get a palindrome (55911955).

The spelling of 42301631 in words is "forty-two million, three hundred one thousand, six hundred thirty-one".