7100381 has 2 divisors, whose sum is σ = 7100382. Its totient is φ = 7100380.

The previous prime is 7100377. The next prime is 7100383. The reversal of 7100381 is 1830017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5331481 + 1768900 = 2309^2 + 1330^2 .

It is a cyclic number.

It is not a de Polignac number, because 7100381 - 2² = 7100377 is a prime.

It is a super-2 number, since 2×7100381² = 100830820690322, which contains 22 as substring.

Together with 7100383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7100383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3550190 + 3550191.

It is an arithmetic number, because the mean of its divisors is an integer number (3550191).

Almost surely, 2^7100381 is an apocalyptic number.

It is an amenable number.

7100381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7100381 is an equidigital number, since it uses as much as digits as its factorization.

7100381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 7100381 is about 2664.6540113118. The cubic root of 7100381 is about 192.2031721549.

Adding to 7100381 its reverse (1830017), we get a palindrome (8930398).

The spelling of 7100381 in words is "seven million, one hundred thousand, three hundred eighty-one".