231434461 has 4 divisors (see below), whose sum is σ = 234222912. Its totient is φ = 228646012.

The previous prime is 231434453. The next prime is 231434479. The reversal of 231434461 is 164434132.

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 231434461 - 2³ = 231434453 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 (231435461) 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, 1394101 + ... + 1394266.

It is an arithmetic number, because the mean of its divisors is an integer number (58555728).

Almost surely, 2^231434461 is an apocalyptic number.

It is an amenable number.

231434461 is a deficient number, since it is larger than the sum of its proper divisors (2788451).

231434461 is an equidigital number, since it uses as much as digits as its factorization.

231434461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2788450.

The product of its digits is 6912, while the sum is 28.

The square root of 231434461 is about 15212.9701570732. The cubic root of 231434461 is about 613.9636729738.

Adding to 231434461 its reverse (164434132), we get a palindrome (395868593).

The spelling of 231434461 in words is "two hundred thirty-one million, four hundred thirty-four thousand, four hundred sixty-one".