213316972 has 24 divisors (see below), whose sum is σ = 412155072. Its totient is φ = 95792400.

The previous prime is 213316963. The next prime is 213316979. The reversal of 213316972 is 279613312.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (213316979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25554 + ... + 32857.

It is an arithmetic number, because the mean of its divisors is an integer number (17173128).

Almost surely, 2^213316972 is an apocalyptic number.

213316972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213316972 is a deficient number, since it is larger than the sum of its proper divisors (198838100).

213316972 is a wasteful number, since it uses less digits than its factorization.

213316972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58509 (or 58507 counting only the distinct ones).

The product of its digits is 13608, while the sum is 34.

The square root of 213316972 is about 14605.3747641065. The cubic root of 213316972 is about 597.5053571178.

The spelling of 213316972 in words is "two hundred thirteen million, three hundred sixteen thousand, nine hundred seventy-two".