331201213 has 8 divisors (see below), whose sum is σ = 379491840. Its totient is φ = 283154640.

The previous prime is 331201193. The next prime is 331201229. The reversal of 331201213 is 312102133.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331201213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331201243) 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, 58093 + ... + 63538.

It is an arithmetic number, because the mean of its divisors is an integer number (47436480).

Almost surely, 2^331201213 is an apocalyptic number.

It is an amenable number.

331201213 is a deficient number, since it is larger than the sum of its proper divisors (48290627).

331201213 is a wasteful number, since it uses less digits than its factorization.

331201213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122027.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 331201213 is about 18198.9343918813. The cubic root of 331201213 is about 691.8797814539.

Adding to 331201213 its reverse (312102133), we get a palindrome (643303346).

The spelling of 331201213 in words is "three hundred thirty-one million, two hundred one thousand, two hundred thirteen".