1608331131 has 12 divisors (see below), whose sum is σ = 2534340120. Its totient is φ = 974746080.

The previous prime is 1608331103. The next prime is 1608331139. The reversal of 1608331131 is 1311338061.

It is not a de Polignac number, because 1608331131 - 2⁵ = 1608331099 is a prime.

It is a super-2 number, since 2×1608331131² = 5173458053887478322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1608331095 and 1608331104.

It is not an unprimeable number, because it can be changed into a prime (1608331139) 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 11 ways as a sum of consecutive naturals, for example, 8122786 + ... + 8122983.

It is an arithmetic number, because the mean of its divisors is an integer number (211195010).

Almost surely, 2^1608331131 is an apocalyptic number.

1608331131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1608331131 is a deficient number, since it is larger than the sum of its proper divisors (926008989).

1608331131 is a wasteful number, since it uses less digits than its factorization.

1608331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16245786 (or 16245783 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1608331131 is about 40104.0039272889. The cubic root of 1608331131 is about 1171.6336132492.

Adding to 1608331131 its reverse (1311338061), we get a palindrome (2919669192).

The spelling of 1608331131 in words is "one billion, six hundred eight million, three hundred thirty-one thousand, one hundred thirty-one".