102231245 has 8 divisors (see below), whose sum is σ = 125669880. Its totient is φ = 79790080.

The previous prime is 102231193. The next prime is 102231277. The reversal of 102231245 is 542132201.

It can be written as a sum of positive squares in 4 ways, for example, as 2111209 + 100120036 = 1453^2 + 10006^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-102231245 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249140 + ... + 249549.

It is an arithmetic number, because the mean of its divisors is an integer number (15708735).

Almost surely, 2^102231245 is an apocalyptic number.

It is an amenable number.

102231245 is a deficient number, since it is larger than the sum of its proper divisors (23438635).

102231245 is an equidigital number, since it uses as much as digits as its factorization.

102231245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498735.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 102231245 is about 10110.9467904841. The cubic root of 102231245 is about 467.5856954443.

Adding to 102231245 its reverse (542132201), we get a palindrome (644363446).

The spelling of 102231245 in words is "one hundred two million, two hundred thirty-one thousand, two hundred forty-five".