102311947 has 2 divisors, whose sum is σ = 102311948. Its totient is φ = 102311946.

The previous prime is 102311927. The next prime is 102311953. The reversal of 102311947 is 749113201.

It is a strong prime.

It is an emirp because it is prime and its reverse (749113201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102311947 - 2¹⁵ = 102279179 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102311927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51155973 + 51155974.

It is an arithmetic number, because the mean of its divisors is an integer number (51155974).

Almost surely, 2^102311947 is an apocalyptic number.

102311947 is a deficient number, since it is larger than the sum of its proper divisors (1).

102311947 is an equidigital number, since it uses as much as digits as its factorization.

102311947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 102311947 is about 10114.9368262980. The cubic root of 102311947 is about 467.7087014643.

The spelling of 102311947 in words is "one hundred two million, three hundred eleven thousand, nine hundred forty-seven".