101223131231 has 2 divisors, whose sum is σ = 101223131232. Its totient is φ = 101223131230.

The previous prime is 101223131213. The next prime is 101223131257. The reversal of 101223131231 is 132131322101.

It is a happy number.

Together with previous prime (101223131213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101223131231 - 2⁶ = 101223131167 is a prime.

It is a super-2 number, since 2×101223131231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101223131281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611565615 + 50611565616.

It is an arithmetic number, because the mean of its divisors is an integer number (50611565616).

Almost surely, 2^101223131231 is an apocalyptic number.

101223131231 is a deficient number, since it is larger than the sum of its proper divisors (1).

101223131231 is an equidigital number, since it uses as much as digits as its factorization.

101223131231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 101223131231 its reverse (132131322101), we get a palindrome (233354453332).

The spelling of 101223131231 in words is "one hundred one billion, two hundred twenty-three million, one hundred thirty-one thousand, two hundred thirty-one".