231613316 has 12 divisors (see below), whose sum is σ = 442170960. Its totient is φ = 105278760.

The previous prime is 231613309. The next prime is 231613357. The reversal of 231613316 is 613316132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2631926 + ... + 2632013.

It is an arithmetic number, because the mean of its divisors is an integer number (36847580).

Almost surely, 2^231613316 is an apocalyptic number.

It is an amenable number.

231613316 is a deficient number, since it is larger than the sum of its proper divisors (210557644).

231613316 is a wasteful number, since it uses less digits than its factorization.

231613316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263954 (or 5263952 counting only the distinct ones).

The product of its digits is 1944, while the sum is 26.

The square root of 231613316 is about 15218.8473939389. The cubic root of 231613316 is about 614.1217914562.

Adding to 231613316 its reverse (613316132), we get a palindrome (844929448).

The spelling of 231613316 in words is "two hundred thirty-one million, six hundred thirteen thousand, three hundred sixteen".