331356416 has 18 divisors (see below), whose sum is σ = 661418982. Its totient is φ = 165678080.

The previous prime is 331356397. The next prime is 331356419. The reversal of 331356416 is 614653133.

It can be written as a sum of positive squares in only one way, i.e., 228130816 + 103225600 = 15104^2 + 10160^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (331356419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646925 + ... + 647436.

It is an arithmetic number, because the mean of its divisors is an integer number (36745499).

Almost surely, 2^331356416 is an apocalyptic number.

It is an amenable number.

331356416 is a deficient number, since it is larger than the sum of its proper divisors (330062566).

331356416 is an equidigital number, since it uses as much as digits as its factorization.

331356416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294377 (or 1294363 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 331356416 is about 18203.1979607980. The cubic root of 331356416 is about 691.9878376692.

The spelling of 331356416 in words is "three hundred thirty-one million, three hundred fifty-six thousand, four hundred sixteen".