210340923 has 8 divisors (see below), whose sum is σ = 302028048. Its totient is φ = 129440544.

The previous prime is 210340913. The next prime is 210340927. The reversal of 210340923 is 329043012.

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

It is not a de Polignac number, because 210340923 - 2²⁴ = 193563707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210340893 and 210340902.

It is not an unprimeable number, because it can be changed into a prime (210340927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2696640 + ... + 2696717.

It is an arithmetic number, because the mean of its divisors is an integer number (37753506).

Almost surely, 2^210340923 is an apocalyptic number.

210340923 is a deficient number, since it is larger than the sum of its proper divisors (91687125).

210340923 is a wasteful number, since it uses less digits than its factorization.

210340923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5393373.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 210340923 is about 14503.1349369714. The cubic root of 210340923 is about 594.7136752921.

Adding to 210340923 its reverse (329043012), we get a palindrome (539383935).

The spelling of 210340923 in words is "two hundred ten million, three hundred forty thousand, nine hundred twenty-three".