215092231 has 2 divisors, whose sum is σ = 215092232. Its totient is φ = 215092230.

The previous prime is 215092201. The next prime is 215092247. The reversal of 215092231 is 132290512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215092231 - 2¹⁵ = 215059463 is a prime.

It is a super-2 number, since 2×215092231² = 92529335673114722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215092196 and 215092205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215092201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107546115 + 107546116.

It is an arithmetic number, because the mean of its divisors is an integer number (107546116).

Almost surely, 2^215092231 is an apocalyptic number.

215092231 is a deficient number, since it is larger than the sum of its proper divisors (1).

215092231 is an equidigital number, since it uses as much as digits as its factorization.

215092231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 215092231 is about 14666.0230123916. The cubic root of 215092231 is about 599.1582929156.

The spelling of 215092231 in words is "two hundred fifteen million, ninety-two thousand, two hundred thirty-one".