16200231031 has 4 divisors (see below), whose sum is σ = 16442025592. Its totient is φ = 15958436472.

The previous prime is 16200231017. The next prime is 16200231083. The reversal of 16200231031 is 13013200261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16200231031 - 2¹¹ = 16200228983 is a prime.

It is a super-2 number, since 2×16200231031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16200231011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120897180 + ... + 120897313.

It is an arithmetic number, because the mean of its divisors is an integer number (4110506398).

Almost surely, 2^16200231031 is an apocalyptic number.

16200231031 is a deficient number, since it is larger than the sum of its proper divisors (241794561).

16200231031 is an equidigital number, since it uses as much as digits as its factorization.

16200231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241794560.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 16200231031 its reverse (13013200261), we get a palindrome (29213431292).

The spelling of 16200231031 in words is "sixteen billion, two hundred million, two hundred thirty-one thousand, thirty-one".