101320123231 has 2 divisors, whose sum is σ = 101320123232. Its totient is φ = 101320123230.

The previous prime is 101320123213. The next prime is 101320123243. The reversal of 101320123231 is 132321023101.

Together with previous prime (101320123213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (132321023101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101320123231 is a prime.

It is a super-2 number, since 2×101320123231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101320123199 and 101320123208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101320123031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50660061615 + 50660061616.

It is an arithmetic number, because the mean of its divisors is an integer number (50660061616).

Almost surely, 2^101320123231 is an apocalyptic number.

101320123231 is a deficient number, since it is larger than the sum of its proper divisors (1).

101320123231 is an equidigital number, since it uses as much as digits as its factorization.

101320123231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 101320123231 its reverse (132321023101), we get a palindrome (233641146332).

The spelling of 101320123231 in words is "one hundred one billion, three hundred twenty million, one hundred twenty-three thousand, two hundred thirty-one".