230557731 has 4 divisors (see below), whose sum is σ = 307410312. Its totient is φ = 153705152.

The previous prime is 230557729. The next prime is 230557739. The reversal of 230557731 is 137755032.

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

It is a cyclic number.

It is not a de Polignac number, because 230557731 - 2¹ = 230557729 is a prime.

It is a super-2 number, since 2×230557731² = 106313734647736722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 230557692 and 230557701.

It is not an unprimeable number, because it can be changed into a prime (230557739) 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 3 ways as a sum of consecutive naturals, for example, 38426286 + ... + 38426291.

It is an arithmetic number, because the mean of its divisors is an integer number (76852578).

Almost surely, 2^230557731 is an apocalyptic number.

230557731 is a deficient number, since it is larger than the sum of its proper divisors (76852581).

230557731 is an equidigital number, since it uses as much as digits as its factorization.

230557731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76852580.

The product of its (nonzero) digits is 22050, while the sum is 33.

The square root of 230557731 is about 15184.1276008864. The cubic root of 230557731 is about 613.1874107077.

The spelling of 230557731 in words is "two hundred thirty million, five hundred fifty-seven thousand, seven hundred thirty-one".