231544130 has 8 divisors (see below), whose sum is σ = 416779452. Its totient is φ = 92617648.

The previous prime is 231544087. The next prime is 231544153. The reversal of 231544130 is 31445132.

It can be written as a sum of positive squares in 2 ways, for example, as 191462569 + 40081561 = 13837^2 + 6331^2 .

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

It is a super-2 number, since 2×231544130² = 107225368274913800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231544096 and 231544105.

It is an unprimeable number.

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, 11577197 + ... + 11577216.

Almost surely, 2^231544130 is an apocalyptic number.

231544130 is a deficient number, since it is larger than the sum of its proper divisors (185235322).

231544130 is a wasteful number, since it uses less digits than its factorization.

231544130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23154420.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 231544130 is about 15216.5741873787. The cubic root of 231544130 is about 614.0606365648.

Adding to 231544130 its reverse (31445132), we get a palindrome (262989262).

The spelling of 231544130 in words is "two hundred thirty-one million, five hundred forty-four thousand, one hundred thirty".