213343992 has 48 divisors (see below), whose sum is σ = 591907680. Its totient is φ = 69379200.

The previous prime is 213343987. The next prime is 213343997. The reversal of 213343992 is 299343312.

213343992 is a `hidden beast` number, since 2 + 133 + 439 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (213343987) and next prime (213343997).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213343997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33184 + ... + 39087.

It is an arithmetic number, because the mean of its divisors is an integer number (12331410).

Almost surely, 2^213343992 is an apocalyptic number.

It is an amenable number.

213343992 is an abundant number, since it is smaller than the sum of its proper divisors (378563688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213343992 is a wasteful number, since it uses less digits than its factorization.

213343992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72324 (or 72317 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 213343992 is about 14606.2997367574. The cubic root of 213343992 is about 597.5305839168.

The spelling of 213343992 in words is "two hundred thirteen million, three hundred forty-three thousand, nine hundred ninety-two".