103231729 has 2 divisors, whose sum is σ = 103231730. Its totient is φ = 103231728.

The previous prime is 103231717. The next prime is 103231741. The reversal of 103231729 is 927132301.

It is a balanced prime because it is at equal distance from previous prime (103231717) and next prime (103231741).

It can be written as a sum of positive squares in only one way, i.e., 95023504 + 8208225 = 9748^2 + 2865^2 .

It is an emirp because it is prime and its reverse (927132301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103231729 - 2⁵ = 103231697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103231697 and 103231706.

It is not a weakly prime, because it can be changed into another prime (103231789) 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, 51615864 + 51615865.

It is an arithmetic number, because the mean of its divisors is an integer number (51615865).

Almost surely, 2^103231729 is an apocalyptic number.

It is an amenable number.

103231729 is a deficient number, since it is larger than the sum of its proper divisors (1).

103231729 is an equidigital number, since it uses as much as digits as its factorization.

103231729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 103231729 is about 10160.3016195387. The cubic root of 103231729 is about 469.1060857215.

It can be divided in two parts, 1032 and 31729, that added together give a square (32761 = 181²).

The spelling of 103231729 in words is "one hundred three million, two hundred thirty-one thousand, seven hundred twenty-nine".