102381287 has 4 divisors (see below), whose sum is σ = 102612840. Its totient is φ = 102149736.

The previous prime is 102381283. The next prime is 102381341. The reversal of 102381287 is 782183201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782183201 = 43 ⋅18190307.

It is a cyclic number.

It is not a de Polignac number, because 102381287 - 2² = 102381283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102381283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115112 + ... + 115997.

It is an arithmetic number, because the mean of its divisors is an integer number (25653210).

Almost surely, 2^102381287 is an apocalyptic number.

102381287 is a deficient number, since it is larger than the sum of its proper divisors (231553).

102381287 is an equidigital number, since it uses as much as digits as its factorization.

102381287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231552.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 102381287 is about 10118.3638499512. The cubic root of 102381287 is about 467.8143378654.

The spelling of 102381287 in words is "one hundred two million, three hundred eighty-one thousand, two hundred eighty-seven".