16481131 has 2 divisors, whose sum is σ = 16481132. Its totient is φ = 16481130.

The previous prime is 16481117. The next prime is 16481141. The reversal of 16481131 is 13118461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16481131 - 2⁵ = 16481099 is a prime.

It is a super-2 number, since 2×16481131² = 543255358078322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16481096 and 16481105.

It is not a weakly prime, because it can be changed into another prime (16481111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8240565 + 8240566.

It is an arithmetic number, because the mean of its divisors is an integer number (8240566).

Almost surely, 2^16481131 is an apocalyptic number.

16481131 is a deficient number, since it is larger than the sum of its proper divisors (1).

16481131 is an equidigital number, since it uses as much as digits as its factorization.

16481131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 25.

The square root of 16481131 is about 4059.6959245737. The cubic root of 16481131 is about 254.4850868014.

Adding to 16481131 its reverse (13118461), we get a palindrome (29599592).

The spelling of 16481131 in words is "sixteen million, four hundred eighty-one thousand, one hundred thirty-one".