101032381 has 2 divisors, whose sum is σ = 101032382. Its totient is φ = 101032380.

The previous prime is 101032319. The next prime is 101032423. The reversal of 101032381 is 183230101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89019225 + 12013156 = 9435^2 + 3466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101032381 is a prime.

It is a super-2 number, since 2×101032381² = 20415084021058322, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101032301) 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 as a sum of consecutive naturals, namely, 50516190 + 50516191.

It is an arithmetic number, because the mean of its divisors is an integer number (50516191).

Almost surely, 2^101032381 is an apocalyptic number.

It is an amenable number.

101032381 is a deficient number, since it is larger than the sum of its proper divisors (1).

101032381 is an equidigital number, since it uses as much as digits as its factorization.

101032381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 101032381 is about 10051.4865069800. The cubic root of 101032381 is about 465.7507139857.

Adding to 101032381 its reverse (183230101), we get a palindrome (284262482).

The spelling of 101032381 in words is "one hundred one million, thirty-two thousand, three hundred eighty-one".