231146741 has 4 divisors (see below), whose sum is σ = 264167712. Its totient is φ = 198125772.

The previous prime is 231146701. The next prime is 231146743. The reversal of 231146741 is 147641132.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-231146741 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 (231146743) 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, 16510475 + ... + 16510488.

It is an arithmetic number, because the mean of its divisors is an integer number (66041928).

Almost surely, 2^231146741 is an apocalyptic number.

It is an amenable number.

231146741 is a deficient number, since it is larger than the sum of its proper divisors (33020971).

231146741 is an equidigital number, since it uses as much as digits as its factorization.

231146741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33020970.

The product of its digits is 4032, while the sum is 29.

The square root of 231146741 is about 15203.5108116514. The cubic root of 231146741 is about 613.7091403203.

Adding to 231146741 its reverse (147641132), we get a palindrome (378787873).

The spelling of 231146741 in words is "two hundred thirty-one million, one hundred forty-six thousand, seven hundred forty-one".