213972241 has 8 divisors (see below), whose sum is σ = 244722944. Its totient is φ = 183267360.

The previous prime is 213972233. The next prime is 213972259. The reversal of 213972241 is 142279312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213972241 - 2³ = 213972233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213972041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780 + ... + 20701.

It is an arithmetic number, because the mean of its divisors is an integer number (30590368).

Almost surely, 2^213972241 is an apocalyptic number.

It is an amenable number.

213972241 is a deficient number, since it is larger than the sum of its proper divisors (30750703).

213972241 is a wasteful number, since it uses less digits than its factorization.

213972241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22911.

The product of its digits is 6048, while the sum is 31.

The square root of 213972241 is about 14627.7900244705. The cubic root of 213972241 is about 598.1165391825.

The spelling of 213972241 in words is "two hundred thirteen million, nine hundred seventy-two thousand, two hundred forty-one".