101002381 has 2 divisors, whose sum is σ = 101002382. Its totient is φ = 101002380.

The previous prime is 101002357. The next prime is 101002387. The reversal of 101002381 is 183200101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97199881 + 3802500 = 9859^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 101002381 - 2⁹ = 101001869 is a prime.

It is a super-2 number, since 2×101002381² = 20402961935338322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101002387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50501190 + 50501191.

It is an arithmetic number, because the mean of its divisors is an integer number (50501191).

Almost surely, 2^101002381 is an apocalyptic number.

It is an amenable number.

101002381 is a deficient number, since it is larger than the sum of its proper divisors (1).

101002381 is an equidigital number, since it uses as much as digits as its factorization.

101002381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 101002381 is about 10049.9940796002. The cubic root of 101002381 is about 465.7046102697.

Adding to 101002381 its reverse (183200101), we get a palindrome (284202482).

The spelling of 101002381 in words is "one hundred one million, two thousand, three hundred eighty-one".