213430899 has 24 divisors (see below), whose sum is σ = 315124416. Its totient is φ = 127430800.

The previous prime is 213430891. The next prime is 213430913. The reversal of 213430899 is 998034312.

It is not a de Polignac number, because 213430899 - 2³ = 213430891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213430891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165712 + ... + 166994.

It is an arithmetic number, because the mean of its divisors is an integer number (13130184).

Almost surely, 2^213430899 is an apocalyptic number.

213430899 is a deficient number, since it is larger than the sum of its proper divisors (101693517).

213430899 is a wasteful number, since it uses less digits than its factorization.

213430899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439 (or 1368 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 213430899 is about 14609.2744173008. The cubic root of 213430899 is about 597.6117088335.

It can be divided in two parts, 2134 and 30899, that added together give a palindrome (33033).

The spelling of 213430899 in words is "two hundred thirteen million, four hundred thirty thousand, eight hundred ninety-nine".