2056515131 has 4 divisors (see below), whose sum is σ = 2243471064. Its totient is φ = 1869559200.

The previous prime is 2056515121. The next prime is 2056515133. The reversal of 2056515131 is 1315156502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056515131 is a prime.

It is a super-2 number, since 2×2056515131² = 8458508968063894322, 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 = 2056515094 and 2056515103.

It is not an unprimeable number, because it can be changed into a prime (2056515133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93477950 + ... + 93477971.

It is an arithmetic number, because the mean of its divisors is an integer number (560867766).

Almost surely, 2^2056515131 is an apocalyptic number.

2056515131 is a deficient number, since it is larger than the sum of its proper divisors (186955933).

2056515131 is a wasteful number, since it uses less digits than its factorization.

2056515131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186955932.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 2056515131 is about 45348.8162028514. The cubic root of 2056515131 is about 1271.6784245946.

The spelling of 2056515131 in words is "two billion, fifty-six million, five hundred fifteen thousand, one hundred thirty-one".