2051131 has 4 divisors (see below), whose sum is σ = 2061064. Its totient is φ = 2041200.

The previous prime is 2051123. The next prime is 2051167. The reversal of 2051131 is 1311502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2051131 - 2³ = 2051123 is a prime.

It is a super-2 number, since 2×2051131² = 8414276758322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4650 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (515266).

2^2051131 is an apocalyptic number.

2051131 is a deficient number, since it is larger than the sum of its proper divisors (9933).

2051131 is an equidigital number, since it uses as much as digits as its factorization.

2051131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9932.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 2051131 is about 1432.1770141990. The cubic root of 2051131 is about 127.0567667361.

Adding to 2051131 its reverse (1311502), we get a palindrome (3362633).

The spelling of 2051131 in words is "two million, fifty-one thousand, one hundred thirty-one".