331661484 has 216 divisors, whose sum is σ = 1074746400. Its totient is φ = 84395520.

The previous prime is 331661471. The next prime is 331661497. The reversal of 331661484 is 484166133.

It is a happy number.

331661484 is a `hidden beast` number, since 3 + 31 + 6 + 614 + 8 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (331661471) and next prime (331661497).

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2225842 + ... + 2225990.

Almost surely, 2^331661484 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 331661484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537373200).

331661484 is an abundant number, since it is smaller than the sum of its proper divisors (743084916).

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

331661484 is a wasteful number, since it uses less digits than its factorization.

331661484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 245 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 331661484 is about 18211.5755496333. The cubic root of 331661484 is about 692.2001353478.

The spelling of 331661484 in words is "three hundred thirty-one million, six hundred sixty-one thousand, four hundred eighty-four".