231622099 has 2 divisors, whose sum is σ = 231622100. Its totient is φ = 231622098.

The previous prime is 231622091. The next prime is 231622163. The reversal of 231622099 is 990226132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231622099 - 2³ = 231622091 is a prime.

It is not a weakly prime, because it can be changed into another prime (231622091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115811049 + 115811050.

It is an arithmetic number, because the mean of its divisors is an integer number (115811050).

Almost surely, 2^231622099 is an apocalyptic number.

231622099 is a deficient number, since it is larger than the sum of its proper divisors (1).

231622099 is an equidigital number, since it uses as much as digits as its factorization.

231622099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 231622099 is about 15219.1359478783. The cubic root of 231622099 is about 614.1295540547.

The spelling of 231622099 in words is "two hundred thirty-one million, six hundred twenty-two thousand, ninety-nine".