213021302430439 has 4 divisors (see below), whose sum is σ = 213021514825240. Its totient is φ = 213021090035640.

The previous prime is 213021302430373. The next prime is 213021302430449. The reversal of 213021302430439 is 934034203120312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213021302430439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213021302430398 and 213021302430407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213021302430449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104685804 + ... + 106701265.

It is an arithmetic number, because the mean of its divisors is an integer number (53255378706310).

Almost surely, 2^{213021302430439} is an apocalyptic number.

213021302430439 is a deficient number, since it is larger than the sum of its proper divisors (212394801).

213021302430439 is a wasteful number, since it uses less digits than its factorization.

213021302430439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212394800.

The product of its (nonzero) digits is 93312, while the sum is 37.

The spelling of 213021302430439 in words is "two hundred thirteen trillion, twenty-one billion, three hundred two million, four hundred thirty thousand, four hundred thirty-nine".