101326381 has 8 divisors (see below), whose sum is σ = 109226264. Its totient is φ = 93441600.

The previous prime is 101326369. The next prime is 101326399. The reversal of 101326381 is 183623101.

It can be written as a sum of positive squares in 4 ways, for example, as 14668900 + 86657481 = 3830^2 + 9309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101326381 - 2⁵ = 101326349 is a prime.

It is a super-2 number, since 2×101326381² = 20534070973114322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101320381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12931 + ... + 19231.

It is an arithmetic number, because the mean of its divisors is an integer number (13653283).

Almost surely, 2^101326381 is an apocalyptic number.

It is an amenable number.

101326381 is a deficient number, since it is larger than the sum of its proper divisors (7899883).

101326381 is a wasteful number, since it uses less digits than its factorization.

101326381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7551.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 101326381 is about 10066.1005856290. The cubic root of 101326381 is about 466.2020481751.

Adding to 101326381 its reverse (183623101), we get a palindrome (284949482).

The spelling of 101326381 in words is "one hundred one million, three hundred twenty-six thousand, three hundred eighty-one".