231323031101 has 4 divisors (see below), whose sum is σ = 231750615804. Its totient is φ = 230895446400.

The previous prime is 231323031097. The next prime is 231323031103. The reversal of 231323031101 is 101130323132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52030066201 + 179292964900 = 228101^2 + 423430^2 .

It is a cyclic number.

It is not a de Polignac number, because 231323031101 - 2² = 231323031097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231323031103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213791540 + ... + 213792621.

It is an arithmetic number, because the mean of its divisors is an integer number (57937653951).

Almost surely, 2^231323031101 is an apocalyptic number.

It is an amenable number.

231323031101 is a deficient number, since it is larger than the sum of its proper divisors (427584703).

231323031101 is an equidigital number, since it uses as much as digits as its factorization.

231323031101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427584702.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231323031101 its reverse (101130323132), we get a palindrome (332453354233).

It can be divided in two parts, 231323031 and 101, that added together give a palindrome (231323132).

The spelling of 231323031101 in words is "two hundred thirty-one billion, three hundred twenty-three million, thirty-one thousand, one hundred one".