20308106137 has 16 divisors (see below), whose sum is σ = 22530493440. Its totient is φ = 18151002000.

The previous prime is 20308106111. The next prime is 20308106173. The reversal of 20308106137 is 73160180302.

It is a cyclic number.

It is not a de Polignac number, because 20308106137 - 2¹⁵ = 20308073369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20308106099 and 20308106108.

It is not an unprimeable number, because it can be changed into a prime (20308106237) 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 15 ways as a sum of consecutive naturals, for example, 93012 + ... + 221962.

It is an arithmetic number, because the mean of its divisors is an integer number (1408155840).

Almost surely, 2^20308106137 is an apocalyptic number.

It is an amenable number.

20308106137 is a deficient number, since it is larger than the sum of its proper divisors (2222387303).

20308106137 is a wasteful number, since it uses less digits than its factorization.

20308106137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129204.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 20308106137 its reverse (73160180302), we get a palindrome (93468286439).

The spelling of 20308106137 in words is "twenty billion, three hundred eight million, one hundred six thousand, one hundred thirty-seven".