230162781 has 8 divisors (see below), whose sum is σ = 307007680. Its totient is φ = 153379872.

The previous prime is 230162773. The next prime is 230162797. The reversal of 230162781 is 187261032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 230162781 - 2³ = 230162773 is a prime.

It is a super-2 number, since 2×230162781² = 105949811515307922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230162761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6001 + ... + 22278.

It is an arithmetic number, because the mean of its divisors is an integer number (38375960).

Almost surely, 2^230162781 is an apocalyptic number.

It is an amenable number.

230162781 is a deficient number, since it is larger than the sum of its proper divisors (76844899).

230162781 is a wasteful number, since it uses less digits than its factorization.

230162781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30995.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 230162781 is about 15171.1166695138. The cubic root of 230162781 is about 612.8370764927.

The spelling of 230162781 in words is "two hundred thirty million, one hundred sixty-two thousand, seven hundred eighty-one".