213003423 has 6 divisors (see below), whose sum is σ = 307671624. Its totient is φ = 142002276.

The previous prime is 213003409. The next prime is 213003451. The reversal of 213003423 is 324300312.

213003423 is a `hidden beast` number, since 21 + 300 + 342 + 3 = 666.

It is not a de Polignac number, because 213003423 - 2⁶ = 213003359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213003396 and 213003405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213003223) 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, 11833515 + ... + 11833532.

It is an arithmetic number, because the mean of its divisors is an integer number (51278604).

Almost surely, 2^213003423 is an apocalyptic number.

213003423 is a deficient number, since it is larger than the sum of its proper divisors (94668201).

213003423 is a wasteful number, since it uses less digits than its factorization.

213003423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23667053 (or 23667050 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 213003423 is about 14594.6367889030. The cubic root of 213003423 is about 597.2124611006.

Adding to 213003423 its reverse (324300312), we get a palindrome (537303735).

The spelling of 213003423 in words is "two hundred thirteen million, three thousand, four hundred twenty-three".