231161302306 has 24 divisors (see below), whose sum is σ = 387377635932. Its totient is φ = 103350799200.

The previous prime is 231161302303. The next prime is 231161302369. The reversal of 231161302306 is 603203161132.

It can be written as a sum of positive squares in 2 ways, for example, as 226704538225 + 4456764081 = 476135^2 + 66759^2 .

It is not an unprimeable number, because it can be changed into a prime (231161302303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7814845 + ... + 7844368.

Almost surely, 2^231161302306 is an apocalyptic number.

231161302306 is a deficient number, since it is larger than the sum of its proper divisors (156216333626).

231161302306 is a wasteful number, since it uses less digits than its factorization.

231161302306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15659298 (or 15659287 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 231161302306 its reverse (603203161132), we get a palindrome (834364463438).

The spelling of 231161302306 in words is "two hundred thirty-one billion, one hundred sixty-one million, three hundred two thousand, three hundred six".