213023998 has 16 divisors (see below), whose sum is σ = 353496960. Its totient is φ = 95464600.

The previous prime is 213023981. The next prime is 213024011. The reversal of 213023998 is 899320312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66628 + ... + 69751.

It is an arithmetic number, because the mean of its divisors is an integer number (22093560).

Almost surely, 2^213023998 is an apocalyptic number.

213023998 is a deficient number, since it is larger than the sum of its proper divisors (140472962).

213023998 is a wasteful number, since it uses less digits than its factorization.

213023998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136463.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 213023998 is about 14595.3416541032. The cubic root of 213023998 is about 597.2316896660.

The spelling of 213023998 in words is "two hundred thirteen million, twenty-three thousand, nine hundred ninety-eight".