240230891 has 4 divisors (see below), whose sum is σ = 240288984. Its totient is φ = 240172800.

The previous prime is 240230857. The next prime is 240230909. The reversal of 240230891 is 198032042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240230891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240239891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22325 + ... + 31286.

It is an arithmetic number, because the mean of its divisors is an integer number (60072246).

Almost surely, 2^240230891 is an apocalyptic number.

240230891 is a deficient number, since it is larger than the sum of its proper divisors (58093).

240230891 is an equidigital number, since it uses as much as digits as its factorization.

240230891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58092.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 240230891 is about 15499.3835683875. The cubic root of 240230891 is about 621.6457239896.

The spelling of 240230891 in words is "two hundred forty million, two hundred thirty thousand, eight hundred ninety-one".