231340316 has 12 divisors (see below), whose sum is σ = 407108520. Its totient is φ = 115023600.

The previous prime is 231340309. The next prime is 231340393. The reversal of 231340316 is 613043132.

It is a junction number, because it is equal to n+sod(n) for n = 231340291 and 231340300.

It is a congruent number.

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, 160835 + ... + 162266.

It is an arithmetic number, because the mean of its divisors is an integer number (33925710).

Almost surely, 2^231340316 is an apocalyptic number.

It is an amenable number.

231340316 is a deficient number, since it is larger than the sum of its proper divisors (175768204).

231340316 is a wasteful number, since it uses less digits than its factorization.

231340316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323284 (or 323282 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 231340316 is about 15209.8756076439. The cubic root of 231340316 is about 613.8804104536.

Adding to 231340316 its reverse (613043132), we get a palindrome (844383448).

The spelling of 231340316 in words is "two hundred thirty-one million, three hundred forty thousand, three hundred sixteen".