103891231 has 2 divisors, whose sum is σ = 103891232. Its totient is φ = 103891230.

The previous prime is 103891219. The next prime is 103891237. The reversal of 103891231 is 132198301.

It is a strong prime.

It is an emirp because it is prime and its reverse (132198301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103891231 - 2⁹ = 103890719 is a prime.

It is a super-2 number, since 2×103891231² = 21586775757390722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103891231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103891237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51945615 + 51945616.

It is an arithmetic number, because the mean of its divisors is an integer number (51945616).

Almost surely, 2^103891231 is an apocalyptic number.

103891231 is a deficient number, since it is larger than the sum of its proper divisors (1).

103891231 is an equidigital number, since it uses as much as digits as its factorization.

103891231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 103891231 is about 10192.7047931351. The cubic root of 103891231 is about 470.1029365605.

The spelling of 103891231 in words is "one hundred three million, eight hundred ninety-one thousand, two hundred thirty-one".