40231837 has 2 divisors, whose sum is σ = 40231838. Its totient is φ = 40231836.

The previous prime is 40231819. The next prime is 40231889. The reversal of 40231837 is 73813204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26770276 + 13461561 = 5174^2 + 3669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40231837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40231897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20115918 + 20115919.

It is an arithmetic number, because the mean of its divisors is an integer number (20115919).

Almost surely, 2^40231837 is an apocalyptic number.

It is an amenable number.

40231837 is a deficient number, since it is larger than the sum of its proper divisors (1).

40231837 is an equidigital number, since it uses as much as digits as its factorization.

40231837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40231837 is about 6342.8571637709. The cubic root of 40231837 is about 342.6546430793.

The spelling of 40231837 in words is "forty million, two hundred thirty-one thousand, eight hundred thirty-seven".