101211310231 has 2 divisors, whose sum is σ = 101211310232. Its totient is φ = 101211310230.

The previous prime is 101211310217. The next prime is 101211310241. The reversal of 101211310231 is 132013112101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101211310231 - 2⁵ = 101211310199 is a prime.

It is a super-2 number, since 2×101211310231² (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 (101211310241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605655115 + 50605655116.

It is an arithmetic number, because the mean of its divisors is an integer number (50605655116).

Almost surely, 2^101211310231 is an apocalyptic number.

101211310231 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211310231 is an equidigital number, since it uses as much as digits as its factorization.

101211310231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 101211310231 its reverse (132013112101), we get a palindrome (233224422332).

The spelling of 101211310231 in words is "one hundred one billion, two hundred eleven million, three hundred ten thousand, two hundred thirty-one".