2051161131 has 16 divisors (see below), whose sum is σ = 2882028800. Its totient is φ = 1294027488.

The previous prime is 2051161121. The next prime is 2051161141. The reversal of 2051161131 is 1311611502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2051161121) and next prime (2051161141).

It is not a de Polignac number, because 2051161131 - 2⁶ = 2051161067 is a prime.

It is a super-2 number, since 2×2051161131² = 8414523970650398322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2051161098 and 2051161107.

It is not an unprimeable number, because it can be changed into a prime (2051161121) 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, 32805 + ... + 71961.

It is an arithmetic number, because the mean of its divisors is an integer number (180126800).

Almost surely, 2^2051161131 is an apocalyptic number.

2051161131 is a deficient number, since it is larger than the sum of its proper divisors (830867669).

2051161131 is a wasteful number, since it uses less digits than its factorization.

2051161131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40098.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 2051161131 is about 45289.7464223416. The cubic root of 2051161131 is about 1270.5738888531.

Adding to 2051161131 its reverse (1311611502), we get a palindrome (3362772633).

The spelling of 2051161131 in words is "two billion, fifty-one million, one hundred sixty-one thousand, one hundred thirty-one".