42303631 has 4 divisors (see below), whose sum is σ = 42839200. Its totient is φ = 41768064.

The previous prime is 42303589. The next prime is 42303641. The reversal of 42303631 is 13630324.

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 42303631 - 2¹¹ = 42301583 is a prime.

It is a super-2 number, since 2×42303631² = 3579194391568322, 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 (42303641) 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, 267666 + ... + 267823.

It is an arithmetic number, because the mean of its divisors is an integer number (10709800).

Almost surely, 2^42303631 is an apocalyptic number.

42303631 is a deficient number, since it is larger than the sum of its proper divisors (535569).

42303631 is an equidigital number, since it uses as much as digits as its factorization.

42303631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535568.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 42303631 is about 6504.1241531816. The cubic root of 42303631 is about 348.4382964489.

Adding to 42303631 its reverse (13630324), we get a palindrome (55933955).

The spelling of 42303631 in words is "forty-two million, three hundred three thousand, six hundred thirty-one".