2620221031 has 2 divisors, whose sum is σ = 2620221032. Its totient is φ = 2620221030.

The previous prime is 2620220987. The next prime is 2620221053. The reversal of 2620221031 is 1301220262.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2620221031 is a prime.

It is a super-2 number, since 2×2620221031² = 13731116502589405922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2620221431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310110515 + 1310110516.

It is an arithmetic number, because the mean of its divisors is an integer number (1310110516).

Almost surely, 2^2620221031 is an apocalyptic number.

2620221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620221031 is an equidigital number, since it uses as much as digits as its factorization.

2620221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2620221031 is about 51188.0946216989. The cubic root of 2620221031 is about 1378.6244486692.

Adding to 2620221031 its reverse (1301220262), we get a palindrome (3921441293).

The spelling of 2620221031 in words is "two billion, six hundred twenty million, two hundred twenty-one thousand, thirty-one".