16207420931 has 6 divisors (see below), whose sum is σ = 17550047700. Its totient is φ = 14960696088.

The previous prime is 16207420927. The next prime is 16207420939. The reversal of 16207420931 is 13902470261.

It is not a de Polignac number, because 16207420931 - 2² = 16207420927 is a prime.

It is a super-2 number, since 2×16207420931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16207420891 and 16207420900.

It is not an unprimeable number, because it can be changed into a prime (16207420939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47950781 + ... + 47951118.

It is an arithmetic number, because the mean of its divisors is an integer number (2925007950).

Almost surely, 2^16207420931 is an apocalyptic number.

16207420931 is a deficient number, since it is larger than the sum of its proper divisors (1342626769).

16207420931 is an equidigital number, since it uses as much as digits as its factorization.

16207420931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95901925 (or 95901912 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 16207420931 in words is "sixteen billion, two hundred seven million, four hundred twenty thousand, nine hundred thirty-one".