102309401 has 2 divisors, whose sum is σ = 102309402. Its totient is φ = 102309400.

The previous prime is 102309397. The next prime is 102309413. The reversal of 102309401 is 104903201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101707225 + 602176 = 10085^2 + 776^2 .

It is a cyclic number.

It is not a de Polignac number, because 102309401 - 2² = 102309397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102309461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51154700 + 51154701.

It is an arithmetic number, because the mean of its divisors is an integer number (51154701).

Almost surely, 2^102309401 is an apocalyptic number.

It is an amenable number.

102309401 is a deficient number, since it is larger than the sum of its proper divisors (1).

102309401 is an equidigital number, since it uses as much as digits as its factorization.

102309401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 102309401 is about 10114.8109720350. The cubic root of 102309401 is about 467.7048218384.

The spelling of 102309401 in words is "one hundred two million, three hundred nine thousand, four hundred one".