1601600331 has 16 divisors (see below), whose sum is σ = 2229260544. Its totient is φ = 1020876384.

The previous prime is 1601600327. The next prime is 1601600333. The reversal of 1601600331 is 1330061061.

It is not a de Polignac number, because 1601600331 - 2² = 1601600327 is a prime.

It is a super-2 number, since 2×1601600331² = 5130247240518619122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1601600298 and 1601600307.

It is not an unprimeable number, because it can be changed into a prime (1601600333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264520 + ... + 270506.

It is an arithmetic number, because the mean of its divisors is an integer number (139328784).

Almost surely, 2^1601600331 is an apocalyptic number.

1601600331 is a deficient number, since it is larger than the sum of its proper divisors (627660213).

1601600331 is a wasteful number, since it uses less digits than its factorization.

1601600331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9890.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1601600331 is about 40019.9991379310. Note that the first 3 decimals coincide. The cubic root of 1601600331 is about 1169.9969150331.

Adding to 1601600331 its reverse (1330061061), we get a palindrome (2931661392).

The spelling of 1601600331 in words is "one billion, six hundred one million, six hundred thousand, three hundred thirty-one".