2001056131 has 2 divisors, whose sum is σ = 2001056132. Its totient is φ = 2001056130.

The previous prime is 2001056063. The next prime is 2001056149. The reversal of 2001056131 is 1316501002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2001056131 - 2²¹ = 1998958979 is a prime.

It is a super-2 number, since 2×2001056131² = 8008451278825378322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001056099 and 2001056108.

It is not a weakly prime, because it can be changed into another prime (2001056171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000528065 + 1000528066.

It is an arithmetic number, because the mean of its divisors is an integer number (1000528066).

Almost surely, 2^2001056131 is an apocalyptic number.

2001056131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001056131 is an equidigital number, since it uses as much as digits as its factorization.

2001056131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2001056131 is about 44733.1658951163. The cubic root of 2001056131 is about 1260.1427844824.

Adding to 2001056131 its reverse (1316501002), we get a palindrome (3317557133).

It can be divided in two parts, 200 and 1056131, that added together give a triangular number (1056331 = T₁₄₅₃).

The spelling of 2001056131 in words is "two billion, one million, fifty-six thousand, one hundred thirty-one".