102310639 has 2 divisors, whose sum is σ = 102310640. Its totient is φ = 102310638.

The previous prime is 102310627. The next prime is 102310669. The reversal of 102310639 is 936013201.

It is a weak prime.

It is an emirp because it is prime and its reverse (936013201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102310639 - 2¹⁵ = 102277871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102310669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51155319 + 51155320.

It is an arithmetic number, because the mean of its divisors is an integer number (51155320).

Almost surely, 2^102310639 is an apocalyptic number.

102310639 is a deficient number, since it is larger than the sum of its proper divisors (1).

102310639 is an equidigital number, since it uses as much as digits as its factorization.

102310639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 102310639 is about 10114.8721692367. The cubic root of 102310639 is about 467.7067083259.

The spelling of 102310639 in words is "one hundred two million, three hundred ten thousand, six hundred thirty-nine".