2040023122309 has 2 divisors, whose sum is σ = 2040023122310. Its totient is φ = 2040023122308.

The previous prime is 2040023122307. The next prime is 2040023122321. The reversal of 2040023122309 is 9032213200402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1296815333284 + 743207789025 = 1138778^2 + 862095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2040023122309 - 2¹ = 2040023122307 is a prime.

It is a super-2 number, since 2×2040023122309² (a number of 25 digits) contains 22 as substring.

Together with 2040023122307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040023122307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020011561154 + 1020011561155.

It is an arithmetic number, because the mean of its divisors is an integer number (1020011561155).

Almost surely, 2^{2040023122309} is an apocalyptic number.

It is an amenable number.

2040023122309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040023122309 is an equidigital number, since it uses as much as digits as its factorization.

2040023122309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 2040023122309 in words is "two trillion, forty billion, twenty-three million, one hundred twenty-two thousand, three hundred nine".