103231091 has 2 divisors, whose sum is σ = 103231092. Its totient is φ = 103231090.

The previous prime is 103231087. The next prime is 103231151. The reversal of 103231091 is 190132301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103231091 - 2² = 103231087 is a prime.

It is not a weakly prime, because it can be changed into another prime (103237091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51615545 + 51615546.

It is an arithmetic number, because the mean of its divisors is an integer number (51615546).

Almost surely, 2^103231091 is an apocalyptic number.

103231091 is a deficient number, since it is larger than the sum of its proper divisors (1).

103231091 is an equidigital number, since it uses as much as digits as its factorization.

103231091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 103231091 is about 10160.2702227844. The cubic root of 103231091 is about 469.1051193187.

Adding to 103231091 its reverse (190132301), we get a palindrome (293363392).

It can be divided in two parts, 1032 and 31091, that added together give a palindrome (32123).

The spelling of 103231091 in words is "one hundred three million, two hundred thirty-one thousand, ninety-one".