16311402 has 32 divisors (see below), whose sum is σ = 36388800. Its totient is φ = 5415984.

The previous prime is 16311377. The next prime is 16311419. The reversal of 16311402 is 20411361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20068 + ... + 20864.

It is an arithmetic number, because the mean of its divisors is an integer number (1137150).

Almost surely, 2^16311402 is an apocalyptic number.

16311402 is an abundant number, since it is smaller than the sum of its proper divisors (20077398).

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

16311402 is a wasteful number, since it uses less digits than its factorization.

16311402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 16311402 is about 4038.7376740759. The cubic root of 16311402 is about 253.6084756859.

Adding to 16311402 its reverse (20411361), we get a palindrome (36722763).

The spelling of 16311402 in words is "sixteen million, three hundred eleven thousand, four hundred two".