115720223 has 2 divisors, whose sum is σ = 115720224. Its totient is φ = 115720222.

The previous prime is 115720183. The next prime is 115720229. The reversal of 115720223 is 322027511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115720223 - 2¹⁰ = 115719199 is a prime.

It is a super-2 number, since 2×115720223² = 26782340022339458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115720229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57860111 + 57860112.

It is an arithmetic number, because the mean of its divisors is an integer number (57860112).

Almost surely, 2^115720223 is an apocalyptic number.

115720223 is a deficient number, since it is larger than the sum of its proper divisors (1).

115720223 is an equidigital number, since it uses as much as digits as its factorization.

115720223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 115720223 is about 10757.3334521154. Note that the first 3 decimals coincide. The cubic root of 115720223 is about 487.3074907661.

Adding to 115720223 its reverse (322027511), we get a palindrome (437747734).

The spelling of 115720223 in words is "one hundred fifteen million, seven hundred twenty thousand, two hundred twenty-three".