231210642 has 32 divisors (see below), whose sum is σ = 527288832. Its totient is φ = 66956544.

The previous prime is 231210631. The next prime is 231210647. The reversal of 231210642 is 246012132.

231210642 is nontrivially palindromic in base 12.

It is not an unprimeable number, because it can be changed into a prime (231210647) 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, 85858 + ... + 88509.

It is an arithmetic number, because the mean of its divisors is an integer number (16477776).

Almost surely, 2^231210642 is an apocalyptic number.

231210642 is an abundant number, since it is smaller than the sum of its proper divisors (296078190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231210642 is a wasteful number, since it uses less digits than its factorization.

231210642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174402.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 231210642 is about 15205.6121876102. The cubic root of 231210642 is about 613.7656888348.

Adding to 231210642 its reverse (246012132), we get a palindrome (477222774).

The spelling of 231210642 in words is "two hundred thirty-one million, two hundred ten thousand, six hundred forty-two".