101011321231 has 2 divisors, whose sum is σ = 101011321232. Its totient is φ = 101011321230.

The previous prime is 101011321211. The next prime is 101011321273. The reversal of 101011321231 is 132123110101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101011321231 - 2¹¹ = 101011319183 is a prime.

It is a super-2 number, since 2×101011321231² (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 (101011321211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505660615 + 50505660616.

It is an arithmetic number, because the mean of its divisors is an integer number (50505660616).

Almost surely, 2^101011321231 is an apocalyptic number.

101011321231 is a deficient number, since it is larger than the sum of its proper divisors (1).

101011321231 is an equidigital number, since it uses as much as digits as its factorization.

101011321231 is an odious number, because the sum of its binary digits is odd.

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

Adding to 101011321231 its reverse (132123110101), we get a palindrome (233134431332).

It can be divided in two parts, 10101 and 1321231, that multiplied together give a palindrome (13345754331).

The spelling of 101011321231 in words is "one hundred one billion, eleven million, three hundred twenty-one thousand, two hundred thirty-one".