102231345 has 16 divisors (see below), whose sum is σ = 167051520. Its totient is φ = 53362944.

The previous prime is 102231301. The next prime is 102231361. The reversal of 102231345 is 543132201.

It is not a de Polignac number, because 102231345 - 2⁶ = 102231281 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71800 + ... + 73209.

It is an arithmetic number, because the mean of its divisors is an integer number (10440720).

Almost surely, 2^102231345 is an apocalyptic number.

102231345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102231345 is a deficient number, since it is larger than the sum of its proper divisors (64820175).

102231345 is a wasteful number, since it uses less digits than its factorization.

102231345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145064.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 102231345 is about 10110.9517356182. The cubic root of 102231345 is about 467.5858479043.

Adding to 102231345 its reverse (543132201), we get a palindrome (645363546).

The spelling of 102231345 in words is "one hundred two million, two hundred thirty-one thousand, three hundred forty-five".