210404013 has 8 divisors (see below), whose sum is σ = 281657376. Its totient is φ = 139710000.

The previous prime is 210404009. The next prime is 210404017. The reversal of 210404013 is 310404012.

It is an interprime number because it is at equal distance from previous prime (210404009) and next prime (210404017).

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

It is not a de Polignac number, because 210404013 - 2² = 210404009 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210403983 and 210404001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210404017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138958 + ... + 140463.

It is an arithmetic number, because the mean of its divisors is an integer number (35207172).

Almost surely, 2^210404013 is an apocalyptic number.

It is an amenable number.

210404013 is a deficient number, since it is larger than the sum of its proper divisors (71253363).

210404013 is a wasteful number, since it uses less digits than its factorization.

210404013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279675.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 210404013 is about 14505.3098208897. The cubic root of 210404013 is about 594.7731291453.

Adding to 210404013 its reverse (310404012), we get a palindrome (520808025).

Subtracting 210404013 from its reverse (310404012), we obtain a palindrome (99999999).

The spelling of 210404013 in words is "two hundred ten million, four hundred four thousand, thirteen".