103309402181 has 2 divisors, whose sum is σ = 103309402182. Its totient is φ = 103309402180.

The previous prime is 103309402123. The next prime is 103309402201. The reversal of 103309402181 is 181204903301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97734390625 + 5575011556 = 312625^2 + 74666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103309402181 is a prime.

It is a super-2 number, since 2×103309402181² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103300402181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51654701090 + 51654701091.

It is an arithmetic number, because the mean of its divisors is an integer number (51654701091).

Almost surely, 2^103309402181 is an apocalyptic number.

It is an amenable number.

103309402181 is a deficient number, since it is larger than the sum of its proper divisors (1).

103309402181 is an equidigital number, since it uses as much as digits as its factorization.

103309402181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 103309402181 in words is "one hundred three billion, three hundred nine million, four hundred two thousand, one hundred eighty-one".