231140214 has 24 divisors (see below), whose sum is σ = 501842952. Its totient is φ = 76886880.

The previous prime is 231140207. The next prime is 231140227. The reversal of 231140214 is 412041132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4239 + ... + 21914.

It is an arithmetic number, because the mean of its divisors is an integer number (20910123).

Almost surely, 2^231140214 is an apocalyptic number.

231140214 is an abundant number, since it is smaller than the sum of its proper divisors (270702738).

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

231140214 is a wasteful number, since it uses less digits than its factorization.

231140214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26652 (or 26649 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 231140214 is about 15203.2961557683. The cubic root of 231140214 is about 613.7033637341.

Adding to 231140214 its reverse (412041132), we get a palindrome (643181346).

The spelling of 231140214 in words is "two hundred thirty-one million, one hundred forty thousand, two hundred fourteen".