231220333323130 has 16 divisors (see below), whose sum is σ = 416231338249224. Its totient is φ = 92480413714240.

The previous prime is 231220333323113. The next prime is 231220333323131. The reversal of 231220333323130 is 31323333022132.

It can be written as a sum of positive squares in 4 ways, for example, as 228134229516769 + 3086103806361 = 15104113^2 + 1756731^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231220333323092 and 231220333323101.

It is not an unprimeable number, because it can be changed into a prime (231220333323131) 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, 964826077 + ... + 965065696.

Almost surely, 2^{231220333323130} is an apocalyptic number.

231220333323130 is a deficient number, since it is larger than the sum of its proper divisors (185011004926094).

231220333323130 is a wasteful number, since it uses less digits than its factorization.

231220333323130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929903761.

The product of its (nonzero) digits is 34992, while the sum is 31.

Adding to 231220333323130 its reverse (31323333022132), we get a palindrome (262543666345262).

The spelling of 231220333323130 in words is "two hundred thirty-one trillion, two hundred twenty billion, three hundred thirty-three million, three hundred twenty-three thousand, one hundred thirty".