16380331 has 8 divisors (see below), whose sum is σ = 18486000. Its totient is φ = 14377440.

The previous prime is 16380317. The next prime is 16380349. The reversal of 16380331 is 13308361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16380331 - 2⁹ = 16379819 is a prime.

It is a super-2 number, since 2×16380331² = 536630487339122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16380296 and 16380305.

It is not an unprimeable number, because it can be changed into a prime (16380031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25356 + ... + 25993.

It is an arithmetic number, because the mean of its divisors is an integer number (2310750).

Almost surely, 2^16380331 is an apocalyptic number.

16380331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16380331 is a deficient number, since it is larger than the sum of its proper divisors (2105669).

16380331 is a wasteful number, since it uses less digits than its factorization.

16380331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51389.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16380331 is about 4047.2621610170. The cubic root of 16380331 is about 253.9652079983.

Adding to 16380331 its reverse (13308361), we get a palindrome (29688692).

The spelling of 16380331 in words is "sixteen million, three hundred eighty thousand, three hundred thirty-one".