331422624 has 192 divisors, whose sum is σ = 1096502400. Its totient is φ = 96546816.

The previous prime is 331422613. The next prime is 331422631. The reversal of 331422624 is 426224133.

331422624 is a `hidden beast` number, since 3 + 3 + 14 + 22 + 624 = 666.

It is a super-3 number, since 3×331422624³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212632 + ... + 214184.

It is an arithmetic number, because the mean of its divisors is an integer number (5710950).

Almost surely, 2^331422624 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 331422624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548251200).

331422624 is an abundant number, since it is smaller than the sum of its proper divisors (765079776).

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

331422624 is a wasteful number, since it uses less digits than its factorization.

331422624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604 (or 1590 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 331422624 is about 18205.0164515169. The cubic root of 331422624 is about 692.0339230700.

Adding to 331422624 its reverse (426224133), we get a palindrome (757646757).

The spelling of 331422624 in words is "three hundred thirty-one million, four hundred twenty-two thousand, six hundred twenty-four".