1115522231 has 2 divisors, whose sum is σ = 1115522232. Its totient is φ = 1115522230.

The previous prime is 1115522227. The next prime is 1115522249. The reversal of 1115522231 is 1322255111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1115522231 - 2² = 1115522227 is a prime.

It is a super-2 number, since 2×1115522231² = 2488779695710434722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1115522197 and 1115522206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115522431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557761115 + 557761116.

It is an arithmetic number, because the mean of its divisors is an integer number (557761116).

Almost surely, 2^1115522231 is an apocalyptic number.

1115522231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115522231 is an equidigital number, since it uses as much as digits as its factorization.

1115522231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600, while the sum is 23.

The square root of 1115522231 is about 33399.4345910226. The cubic root of 1115522231 is about 1037.1129963379.

Adding to 1115522231 its reverse (1322255111), we get a palindrome (2437777342).

The spelling of 1115522231 in words is "one billion, one hundred fifteen million, five hundred twenty-two thousand, two hundred thirty-one".