227999731 has 2 divisors, whose sum is σ = 227999732. Its totient is φ = 227999730.

The previous prime is 227999719. The next prime is 227999741. The reversal of 227999731 is 137999722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-227999731 is a prime.

It is a super-2 number, since 2×227999731² = 103967754672144722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (227999701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113999865 + 113999866.

It is an arithmetic number, because the mean of its divisors is an integer number (113999866).

Almost surely, 2^227999731 is an apocalyptic number.

227999731 is a deficient number, since it is larger than the sum of its proper divisors (1).

227999731 is an equidigital number, since it uses as much as digits as its factorization.

227999731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 49.

The square root of 227999731 is about 15099.6599630588. The cubic root of 227999731 is about 610.9112341727.

Subtracting from 227999731 its reverse (137999722), we obtain a palindrome (90000009).

The spelling of 227999731 in words is "two hundred twenty-seven million, nine hundred ninety-nine thousand, seven hundred thirty-one".