2061320731 has 2 divisors, whose sum is σ = 2061320732. Its totient is φ = 2061320730.

The previous prime is 2061320647. The next prime is 2061320761. The reversal of 2061320731 is 1370231602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2061320731 - 2¹⁹ = 2060796443 is a prime.

It is a super-2 number, since 2×2061320731² = 8498086312100748722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2061320696 and 2061320705.

It is not a weakly prime, because it can be changed into another prime (2061320761) 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, 1030660365 + 1030660366.

It is an arithmetic number, because the mean of its divisors is an integer number (1030660366).

Almost surely, 2^2061320731 is an apocalyptic number.

2061320731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2061320731 is an equidigital number, since it uses as much as digits as its factorization.

2061320731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2061320731 is about 45401.7701306898. The cubic root of 2061320731 is about 1272.6681934482.

The spelling of 2061320731 in words is "two billion, sixty-one million, three hundred twenty thousand, seven hundred thirty-one".