231141212 has 12 divisors (see below), whose sum is σ = 405508656. Its totient is φ = 115281600.

The previous prime is 231141187. The next prime is 231141217. The reversal of 231141212 is 212141132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231141217) 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, 70448 + ... + 73655.

It is an arithmetic number, because the mean of its divisors is an integer number (33792388).

Almost surely, 2^231141212 is an apocalyptic number.

It is an amenable number.

231141212 is a deficient number, since it is larger than the sum of its proper divisors (174367444).

231141212 is a wasteful number, since it uses less digits than its factorization.

231141212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144508 (or 144506 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 231141212 is about 15203.3289775628. The cubic root of 231141212 is about 613.7042470003.

Adding to 231141212 its reverse (212141132), we get a palindrome (443282344).

The spelling of 231141212 in words is "two hundred thirty-one million, one hundred forty-one thousand, two hundred twelve".