331346136 has 64 divisors (see below), whose sum is σ = 906526080. Its totient is φ = 100090880.

The previous prime is 331346131. The next prime is 331346143. The reversal of 331346136 is 631643133.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331346131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89800 + ... + 93416.

It is an arithmetic number, because the mean of its divisors is an integer number (14164470).

Almost surely, 2^331346136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331346136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453263040).

331346136 is an abundant number, since it is smaller than the sum of its proper divisors (575179944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331346136 is a wasteful number, since it uses less digits than its factorization.

331346136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984 (or 3980 counting only the distinct ones).

The product of its digits is 11664, while the sum is 30.

The square root of 331346136 is about 18202.9155906410. The cubic root of 331346136 is about 691.9806815193.

Adding to 331346136 its reverse (631643133), we get a palindrome (962989269).

The spelling of 331346136 in words is "three hundred thirty-one million, three hundred forty-six thousand, one hundred thirty-six".