231220113031113 has 32 divisors (see below), whose sum is σ = 312039869322240. Its totient is φ = 152280443078400.

The previous prime is 231220113031093. The next prime is 231220113031121. The reversal of 231220113031113 is 311130311022132.

It is not a de Polignac number, because 231220113031113 - 2²⁰ = 231220111982537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231220113031153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1064180995 + ... + 1064398247.

It is an arithmetic number, because the mean of its divisors is an integer number (9751245916320).

Almost surely, 2^{231220113031113} is an apocalyptic number.

It is an amenable number.

231220113031113 is a deficient number, since it is larger than the sum of its proper divisors (80819756291127).

231220113031113 is a wasteful number, since it uses less digits than its factorization.

231220113031113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225169.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 231220113031113 its reverse (311130311022132), we get a palindrome (542350424053245).

The spelling of 231220113031113 in words is "two hundred thirty-one trillion, two hundred twenty billion, one hundred thirteen million, thirty-one thousand, one hundred thirteen".