331770487813 has 8 divisors (see below), whose sum is σ = 337440771360. Its totient is φ = 326101772880.

The previous prime is 331770487751. The next prime is 331770487847. The reversal of 331770487813 is 318784077133.

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 a de Polignac number, because none of the positive numbers 2^k-331770487813 is a prime.

It is a super-2 number, since 2×331770487813² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331770487313) 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, 38478 + ... + 815488.

It is an arithmetic number, because the mean of its divisors is an integer number (42180096420).

Almost surely, 2^331770487813 is an apocalyptic number.

It is an amenable number.

331770487813 is a deficient number, since it is larger than the sum of its proper divisors (5670283547).

331770487813 is an equidigital number, since it uses as much as digits as its factorization.

331770487813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784307.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 331770487813 in words is "three hundred thirty-one billion, seven hundred seventy million, four hundred eighty-seven thousand, eight hundred thirteen".