415640231 has 2 divisors, whose sum is σ = 415640232. Its totient is φ = 415640230.

The previous prime is 415640227. The next prime is 415640243. The reversal of 415640231 is 132046514.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 415640231 - 2² = 415640227 is a prime.

It is a super-2 number, since 2×415640231² = 345513603251466722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 415640231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (415640831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207820115 + 207820116.

It is an arithmetic number, because the mean of its divisors is an integer number (207820116).

Almost surely, 2^415640231 is an apocalyptic number.

415640231 is a deficient number, since it is larger than the sum of its proper divisors (1).

415640231 is an equidigital number, since it uses as much as digits as its factorization.

415640231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 415640231 is about 20387.2565834641. The cubic root of 415640231 is about 746.2869702894.

Adding to 415640231 its reverse (132046514), we get a palindrome (547686745).

The spelling of 415640231 in words is "four hundred fifteen million, six hundred forty thousand, two hundred thirty-one".