2131016 has 32 divisors (see below), whose sum is σ = 4195800. Its totient is φ = 1013760.

The previous prime is 2131013. The next prime is 2131039. The reversal of 2131016 is 6101312.

It can be written as a sum of positive squares in 4 ways, for example, as 1020100 + 1110916 = 1010^2 + 1054^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23900 + ... + 23988.

2^2131016 is an apocalyptic number.

It is an amenable number.

2131016 is a deficient number, since it is larger than the sum of its proper divisors (2064784).

2131016 is a wasteful number, since it uses less digits than its factorization.

2131016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2131016 is about 1459.7999862995. The cubic root of 2131016 is about 128.6852893780.

Adding to 2131016 its reverse (6101312), we get a palindrome (8232328).

The spelling of 2131016 in words is "two million, one hundred thirty-one thousand, sixteen".