102423213 has 6 divisors (see below), whose sum is σ = 147944654. Its totient is φ = 68282136.

The previous prime is 102423203. The next prime is 102423241. The reversal of 102423213 is 312324201.

It can be written as a sum of positive squares in only one way, i.e., 99740169 + 2683044 = 9987^2 + 1638^2 .

It is not a de Polignac number, because 102423213 - 2⁹ = 102422701 is a prime.

It is a super-2 number, since 2×102423213² = 20981029122486738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102423203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5690170 + ... + 5690187.

Almost surely, 2^102423213 is an apocalyptic number.

It is an amenable number.

102423213 is a deficient number, since it is larger than the sum of its proper divisors (45521441).

102423213 is a wasteful number, since it uses less digits than its factorization.

102423213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11380363 (or 11380360 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 102423213 is about 10120.4354155343. The cubic root of 102423213 is about 467.8781871222.

Adding to 102423213 its reverse (312324201), we get a palindrome (414747414).

The spelling of 102423213 in words is "one hundred two million, four hundred twenty-three thousand, two hundred thirteen".