42203231 has 16 divisors (see below), whose sum is σ = 51943680. Its totient is φ = 33463680.

The previous prime is 42203221. The next prime is 42203251. The reversal of 42203231 is 13230224.

It is a cyclic number.

It is not a de Polignac number, because 42203231 - 2¹⁸ = 41941087 is a prime.

It is a super-2 number, since 2×42203231² = 3562225413678722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42203221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4016 + ... + 10026.

It is an arithmetic number, because the mean of its divisors is an integer number (3246480).

Almost surely, 2^42203231 is an apocalyptic number.

42203231 is a deficient number, since it is larger than the sum of its proper divisors (9740449).

42203231 is a wasteful number, since it uses less digits than its factorization.

42203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6094.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42203231 is about 6496.4013884612. The cubic root of 42203231 is about 348.1624263789.

Adding to 42203231 its reverse (13230224), we get a palindrome (55433455).

The spelling of 42203231 in words is "forty-two million, two hundred three thousand, two hundred thirty-one".