102317890 has 8 divisors (see below), whose sum is σ = 184172220. Its totient is φ = 40927152.

The previous prime is 102317879. The next prime is 102317893. The reversal of 102317890 is 98713201.

It can be written as a sum of positive squares in 2 ways, for example, as 97160449 + 5157441 = 9857^2 + 2271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×102317890² = 20937901228104200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102317893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115885 + ... + 5115904.

Almost surely, 2^102317890 is an apocalyptic number.

102317890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102317890 is a deficient number, since it is larger than the sum of its proper divisors (81854330).

102317890 is a wasteful number, since it uses less digits than its factorization.

102317890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10231796.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 102317890 is about 10115.2305954931. The cubic root of 102317890 is about 467.7177572297.

The spelling of 102317890 in words is "one hundred two million, three hundred seventeen thousand, eight hundred ninety".