16212351631 has 24 divisors (see below), whose sum is σ = 20345456880. Its totient is φ = 12832065792.

The previous prime is 16212351613. The next prime is 16212351643. The reversal of 16212351631 is 13615321261.

It is not a de Polignac number, because 16212351631 - 2¹⁷ = 16212220559 is a prime.

It is a super-2 number, since 2×16212351631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16212351593 and 16212351602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16212351601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139461 + ... + 227758.

It is an arithmetic number, because the mean of its divisors is an integer number (847727370).

Almost surely, 2^16212351631 is an apocalyptic number.

16212351631 is a deficient number, since it is larger than the sum of its proper divisors (4133105249).

16212351631 is a wasteful number, since it uses less digits than its factorization.

16212351631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367303 (or 367296 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

Adding to 16212351631 its reverse (13615321261), we get a palindrome (29827672892).

The spelling of 16212351631 in words is "sixteen billion, two hundred twelve million, three hundred fifty-one thousand, six hundred thirty-one".