102311801 has 2 divisors, whose sum is σ = 102311802. Its totient is φ = 102311800.

The previous prime is 102311779. The next prime is 102311813. The reversal of 102311801 is 108113201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86471401 + 15840400 = 9299^2 + 3980^2 .

It is a cyclic number.

It is not a de Polignac number, because 102311801 - 2²² = 98117497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102311801.

It is not a weakly prime, because it can be changed into another prime (102311821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51155900 + 51155901.

It is an arithmetic number, because the mean of its divisors is an integer number (51155901).

Almost surely, 2^102311801 is an apocalyptic number.

It is an amenable number.

102311801 is a deficient number, since it is larger than the sum of its proper divisors (1).

102311801 is an equidigital number, since it uses as much as digits as its factorization.

102311801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 102311801 is about 10114.9296092459. The cubic root of 102311801 is about 467.7084789894.

The spelling of 102311801 in words is "one hundred two million, three hundred eleven thousand, eight hundred one".