2361123509 has 2 divisors, whose sum is σ = 2361123510. Its totient is φ = 2361123508.

The previous prime is 2361123497. The next prime is 2361123511. The reversal of 2361123509 is 9053211632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1223950225 + 1137173284 = 34985^2 + 33722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2361123509 is a prime.

Together with 2361123511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2361123599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1180561754 + 1180561755.

It is an arithmetic number, because the mean of its divisors is an integer number (1180561755).

Almost surely, 2^2361123509 is an apocalyptic number.

It is an amenable number.

2361123509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2361123509 is an equidigital number, since it uses as much as digits as its factorization.

2361123509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2361123509 is about 48591.3933634342. The cubic root of 2361123509 is about 1331.5972874159.

It can be divided in two parts, 2361123 and 509, that added together give a palindrome (2361632).

The spelling of 2361123509 in words is "two billion, three hundred sixty-one million, one hundred twenty-three thousand, five hundred nine".