2140305997 has 2 divisors, whose sum is σ = 2140305998. Its totient is φ = 2140305996.

The previous prime is 2140305989. The next prime is 2140306013. The reversal of 2140305997 is 7995030412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1544018436 + 596287561 = 39294^2 + 24419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140305997 - 2³ = 2140305989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140705997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070152998 + 1070152999.

It is an arithmetic number, because the mean of its divisors is an integer number (1070152999).

Almost surely, 2^2140305997 is an apocalyptic number.

It is an amenable number.

2140305997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140305997 is an equidigital number, since it uses as much as digits as its factorization.

2140305997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 2140305997 is about 46263.4412576497. The cubic root of 2140305997 is about 1288.7201610648.

The spelling of 2140305997 in words is "two billion, one hundred forty million, three hundred five thousand, nine hundred ninety-seven".