211245397 has 8 divisors (see below), whose sum is σ = 230622912. Its totient is φ = 191896800.

The previous prime is 211245373. The next prime is 211245443. The reversal of 211245397 is 793542112.

It is a happy number.

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 211245397 - 2⁷ = 211245269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211245337) 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, 9808 + ... + 22774.

It is an arithmetic number, because the mean of its divisors is an integer number (28827864).

Almost surely, 2^211245397 is an apocalyptic number.

It is an amenable number.

211245397 is a deficient number, since it is larger than the sum of its proper divisors (19377515).

211245397 is a wasteful number, since it uses less digits than its factorization.

211245397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14459.

The product of its digits is 15120, while the sum is 34.

The square root of 211245397 is about 14534.2835048722. The cubic root of 211245397 is about 595.5648868783.

The spelling of 211245397 in words is "two hundred eleven million, two hundred forty-five thousand, three hundred ninety-seven".