2581002131 has 2 divisors, whose sum is σ = 2581002132. Its totient is φ = 2581002130.

The previous prime is 2581002121. The next prime is 2581002157. The reversal of 2581002131 is 1312001852.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2581002131 - 2¹⁰ = 2581001107 is a prime.

It is a super-2 number, since 2×2581002131² = 13323144000453082322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2581002097 and 2581002106.

It is not a weakly prime, because it can be changed into another prime (2581002121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290501065 + 1290501066.

It is an arithmetic number, because the mean of its divisors is an integer number (1290501066).

Almost surely, 2^2581002131 is an apocalyptic number.

2581002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581002131 is an equidigital number, since it uses as much as digits as its factorization.

2581002131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2581002131 is about 50803.5641564645. The cubic root of 2581002131 is about 1371.7115254735.

Adding to 2581002131 its reverse (1312001852), we get a palindrome (3893003983).

The spelling of 2581002131 in words is "two billion, five hundred eighty-one million, two thousand, one hundred thirty-one".