240637231 has 2 divisors, whose sum is σ = 240637232. Its totient is φ = 240637230.

The previous prime is 240637181. The next prime is 240637249. The reversal of 240637231 is 132736042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240637231 is a prime.

It is a super-2 number, since 2×240637231² = 115812553886694722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240637231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240635231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120318615 + 120318616.

It is an arithmetic number, because the mean of its divisors is an integer number (120318616).

Almost surely, 2^240637231 is an apocalyptic number.

240637231 is a deficient number, since it is larger than the sum of its proper divisors (1).

240637231 is an equidigital number, since it uses as much as digits as its factorization.

240637231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 240637231 is about 15512.4862933058. The cubic root of 240637231 is about 621.9960220380.

The spelling of 240637231 in words is "two hundred forty million, six hundred thirty-seven thousand, two hundred thirty-one".