231421514 has 16 divisors (see below), whose sum is σ = 357671808. Its totient is φ = 112241472.

The previous prime is 231421499. The next prime is 231421523. The reversal of 231421514 is 415124132.

It is a self number, because there is not a number n which added to its sum of digits gives 231421514.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272 + ... + 21515.

It is an arithmetic number, because the mean of its divisors is an integer number (22354488).

Almost surely, 2^231421514 is an apocalyptic number.

231421514 is a deficient number, since it is larger than the sum of its proper divisors (126250294).

231421514 is a wasteful number, since it uses less digits than its factorization.

231421514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21949.

The product of its digits is 960, while the sum is 23.

The square root of 231421514 is about 15212.5446260644. The cubic root of 231421514 is about 613.9522238924.

Adding to 231421514 its reverse (415124132), we get a palindrome (646545646).

The spelling of 231421514 in words is "two hundred thirty-one million, four hundred twenty-one thousand, five hundred fourteen".