231211234 has 8 divisors (see below), whose sum is σ = 347246928. Its totient is φ = 115462260.

The previous prime is 231211219. The next prime is 231211291. The reversal of 231211234 is 432112132.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69652 + ... + 72895.

It is an arithmetic number, because the mean of its divisors is an integer number (43405866).

Almost surely, 2^231211234 is an apocalyptic number.

231211234 is a deficient number, since it is larger than the sum of its proper divisors (116035694).

231211234 is a wasteful number, since it uses less digits than its factorization.

231211234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143360.

The product of its digits is 288, while the sum is 19.

The square root of 231211234 is about 15205.6316540945. The cubic root of 231211234 is about 613.7662126702.

Adding to 231211234 its reverse (432112132), we get a palindrome (663323366).

The spelling of 231211234 in words is "two hundred thirty-one million, two hundred eleven thousand, two hundred thirty-four".