40231237 has 2 divisors, whose sum is σ = 40231238. Its totient is φ = 40231236.

The previous prime is 40231199. The next prime is 40231253. The reversal of 40231237 is 73213204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30459361 + 9771876 = 5519^2 + 3126^2 .

It is a cyclic number.

It is not a de Polignac number, because 40231237 - 2¹⁵ = 40198469 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40231297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115618 + 20115619.

It is an arithmetic number, because the mean of its divisors is an integer number (20115619).

Almost surely, 2^40231237 is an apocalyptic number.

It is an amenable number.

40231237 is a deficient number, since it is larger than the sum of its proper divisors (1).

40231237 is an equidigital number, since it uses as much as digits as its factorization.

40231237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 40231237 is about 6342.8098662974. The cubic root of 40231237 is about 342.6529396704.

The spelling of 40231237 in words is "forty million, two hundred thirty-one thousand, two hundred thirty-seven".