231220210313123 has 2 divisors, whose sum is σ = 231220210313124. Its totient is φ = 231220210313122.

The previous prime is 231220210313093. The next prime is 231220210313273. The reversal of 231220210313123 is 321313012022132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231220210313123 - 2¹⁰ = 231220210312099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231220210313092 and 231220210313101.

It is not a weakly prime, because it can be changed into another prime (231220210313423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115610105156561 + 115610105156562.

It is an arithmetic number, because the mean of its divisors is an integer number (115610105156562).

Almost surely, 2^{231220210313123} is an apocalyptic number.

231220210313123 is a deficient number, since it is larger than the sum of its proper divisors (1).

231220210313123 is an equidigital number, since it uses as much as digits as its factorization.

231220210313123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 231220210313123 its reverse (321313012022132), we get a palindrome (552533222335255).

The spelling of 231220210313123 in words is "two hundred thirty-one trillion, two hundred twenty billion, two hundred ten million, three hundred thirteen thousand, one hundred twenty-three".