231146263 has 16 divisors (see below), whose sum is σ = 250725024. Its totient is φ = 212290560.

The previous prime is 231146243. The next prime is 231146287. The reversal of 231146263 is 362641132.

231146263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-231146263 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 (231146213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141256 + ... + 142882.

It is an arithmetic number, because the mean of its divisors is an integer number (15670314).

Almost surely, 2^231146263 is an apocalyptic number.

231146263 is a deficient number, since it is larger than the sum of its proper divisors (19578761).

231146263 is a wasteful number, since it uses less digits than its factorization.

231146263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842.

The product of its digits is 5184, while the sum is 28.

The square root of 231146263 is about 15203.4950915900. The cubic root of 231146263 is about 613.7087172800.

Adding to 231146263 its reverse (362641132), we get a palindrome (593787395).

The spelling of 231146263 in words is "two hundred thirty-one million, one hundred forty-six thousand, two hundred sixty-three".