101326261 has 4 divisors (see below), whose sum is σ = 104820300. Its totient is φ = 97832224.

The previous prime is 101326249. The next prime is 101326283. The reversal of 101326261 is 162623101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58828900 + 42497361 = 7670^2 + 6519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101326261 is a prime.

It is a super-3 number, since 3×101326261³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101326861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1746976 + ... + 1747033.

It is an arithmetic number, because the mean of its divisors is an integer number (26205075).

Almost surely, 2^101326261 is an apocalyptic number.

It is an amenable number.

101326261 is a deficient number, since it is larger than the sum of its proper divisors (3494039).

101326261 is an equidigital number, since it uses as much as digits as its factorization.

101326261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494038.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 101326261 is about 10066.0946250271. The cubic root of 101326261 is about 466.2018641353.

Adding to 101326261 its reverse (162623101), we get a palindrome (263949362).

The spelling of 101326261 in words is "one hundred one million, three hundred twenty-six thousand, two hundred sixty-one".