102312213 has 4 divisors (see below), whose sum is σ = 136416288. Its totient is φ = 68208140.

The previous prime is 102312209. The next prime is 102312227. The reversal of 102312213 is 312213201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102312213 - 2² = 102312209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102312192 and 102312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102312253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17052033 + ... + 17052038.

It is an arithmetic number, because the mean of its divisors is an integer number (34104072).

Almost surely, 2^102312213 is an apocalyptic number.

It is an amenable number.

102312213 is a deficient number, since it is larger than the sum of its proper divisors (34104075).

102312213 is an equidigital number, since it uses as much as digits as its factorization.

102312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34104074.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 102312213 is about 10114.9499751605. The cubic root of 102312213 is about 467.7091067946.

Adding to 102312213 its reverse (312213201), we get a palindrome (414525414).

The spelling of 102312213 in words is "one hundred two million, three hundred twelve thousand, two hundred thirteen".