230122157 has 4 divisors (see below), whose sum is σ = 230257440. Its totient is φ = 229986876.

The previous prime is 230122117. The next prime is 230122187. The reversal of 230122157 is 751221032.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 230122157 - 2⁶ = 230122093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230122117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65057 + ... + 68502.

It is an arithmetic number, because the mean of its divisors is an integer number (57564360).

Almost surely, 2^230122157 is an apocalyptic number.

It is an amenable number.

230122157 is a deficient number, since it is larger than the sum of its proper divisors (135283).

230122157 is a wasteful number, since it uses less digits than its factorization.

230122157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135282.

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

The square root of 230122157 is about 15169.7777505143. Note that the first 4 decimals coincide. The cubic root of 230122157 is about 612.8010188844.

Adding to 230122157 its reverse (751221032), we get a palindrome (981343189).

The spelling of 230122157 in words is "two hundred thirty million, one hundred twenty-two thousand, one hundred fifty-seven".