16103421031 has 4 divisors (see below), whose sum is σ = 16124694472. Its totient is φ = 16082147592.

The previous prime is 16103421017. The next prime is 16103421053. The reversal of 16103421031 is 13012430161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13012430161 = 83 ⋅156776267.

It is a cyclic number.

It is not a de Polignac number, because 16103421031 - 2¹¹ = 16103418983 is a prime.

It is a super-2 number, since 2×16103421031² (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 = 16103420993 and 16103421011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16103421011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10635585 + ... + 10637098.

It is an arithmetic number, because the mean of its divisors is an integer number (4031173618).

Almost surely, 2^16103421031 is an apocalyptic number.

16103421031 is a deficient number, since it is larger than the sum of its proper divisors (21273441).

16103421031 is an equidigital number, since it uses as much as digits as its factorization.

16103421031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21273440.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 16103421031 its reverse (13012430161), we get a palindrome (29115851192).

The spelling of 16103421031 in words is "sixteen billion, one hundred three million, four hundred twenty-one thousand, thirty-one".