16103531 has 2 divisors, whose sum is σ = 16103532. Its totient is φ = 16103530.

The previous prime is 16103513. The next prime is 16103533. The reversal of 16103531 is 13530161.

It is a happy number.

Together with previous prime (16103513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16103531 - 2¹⁴ = 16087147 is a prime.

It is a super-2 number, since 2×16103531² = 518647421335922, which contains 22 as substring.

Together with 16103533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16103533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8051765 + 8051766.

It is an arithmetic number, because the mean of its divisors is an integer number (8051766).

Almost surely, 2^16103531 is an apocalyptic number.

16103531 is a deficient number, since it is larger than the sum of its proper divisors (1).

16103531 is an equidigital number, since it uses as much as digits as its factorization.

16103531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 16103531 is about 4012.9205075605. The cubic root of 16103531 is about 252.5265455867.

Adding to 16103531 its reverse (13530161), we get a palindrome (29633692).

The spelling of 16103531 in words is "sixteen million, one hundred three thousand, five hundred thirty-one".