2621205131 has 2 divisors, whose sum is σ = 2621205132. Its totient is φ = 2621205130.

The previous prime is 2621205089. The next prime is 2621205157. The reversal of 2621205131 is 1315021262.

2621205131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2621205131 - 2¹⁰ = 2621204107 is a prime.

It is a super-2 number, since 2×2621205131² = 13741432677561454322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2621205097 and 2621205106.

It is not a weakly prime, because it can be changed into another prime (2621205161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310602565 + 1310602566.

It is an arithmetic number, because the mean of its divisors is an integer number (1310602566).

Almost surely, 2^2621205131 is an apocalyptic number.

2621205131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621205131 is an equidigital number, since it uses as much as digits as its factorization.

2621205131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2621205131 is about 51197.7063060446. The cubic root of 2621205131 is about 1378.7970211977.

Adding to 2621205131 its reverse (1315021262), we get a palindrome (3936226393).

The spelling of 2621205131 in words is "two billion, six hundred twenty-one million, two hundred five thousand, one hundred thirty-one".