16331131 has 2 divisors, whose sum is σ = 16331132. Its totient is φ = 16331130.

The previous prime is 16331123. The next prime is 16331149. The reversal of 16331131 is 13113361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16331131 - 2³ = 16331123 is a prime.

It is a super-2 number, since 2×16331131² = 533411679478322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16331099 and 16331108.

It is not a weakly prime, because it can be changed into another prime (16331111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8165565 + 8165566.

It is an arithmetic number, because the mean of its divisors is an integer number (8165566).

Almost surely, 2^16331131 is an apocalyptic number.

16331131 is a deficient number, since it is larger than the sum of its proper divisors (1).

16331131 is an equidigital number, since it uses as much as digits as its factorization.

16331131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 19.

The square root of 16331131 is about 4041.1794070543. The cubic root of 16331131 is about 253.7106828355.

Adding to 16331131 its reverse (13113361), we get a palindrome (29444492).

The spelling of 16331131 in words is "sixteen million, three hundred thirty-one thousand, one hundred thirty-one".