231133214 has 16 divisors (see below), whose sum is σ = 393020880. Its totient is φ = 101062080.

The previous prime is 231133211. The next prime is 231133237. The reversal of 231133214 is 412331132.

231133214 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231133214² = 106845125227939592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231133211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233447 + ... + 234434.

It is an arithmetic number, because the mean of its divisors is an integer number (24563805).

Almost surely, 2^231133214 is an apocalyptic number.

231133214 is a deficient number, since it is larger than the sum of its proper divisors (161887666).

231133214 is a wasteful number, since it uses less digits than its factorization.

231133214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467915.

The product of its digits is 432, while the sum is 20.

The square root of 231133214 is about 15203.0659407897. The cubic root of 231133214 is about 613.6971684081.

Adding to 231133214 its reverse (412331132), we get a palindrome (643464346).

The spelling of 231133214 in words is "two hundred thirty-one million, one hundred thirty-three thousand, two hundred fourteen".