331382736 has 30 divisors (see below), whose sum is σ = 927411810. Its totient is φ = 110460864.

The previous prime is 331382731. The next prime is 331382761. The reversal of 331382736 is 637283133.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 329640336 + 1742400 = 18156^2 + 1320^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 331382736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331382731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1150491 + ... + 1150778.

It is an arithmetic number, because the mean of its divisors is an integer number (30913727).

Almost surely, 2^331382736 is an apocalyptic number.

331382736 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

331382736 is an abundant number, since it is smaller than the sum of its proper divisors (596029074).

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

331382736 is a wasteful number, since it uses less digits than its factorization.

331382736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301283 (or 2301274 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 331382736 is about 18203.9208963344. The cubic root of 331382736 is about 692.0061589660.

The spelling of 331382736 in words is "three hundred thirty-one million, three hundred eighty-two thousand, seven hundred thirty-six".