2309428745723 has 8 divisors (see below), whose sum is σ = 2562078116160. Its totient is φ = 2063896259080.

The previous prime is 2309428745653. The next prime is 2309428745747. The reversal of 2309428745723 is 3275478249032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2309428745723 is a prime.

It is a super-2 number, since 2×2309428745723² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2309428745423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1779220265 + ... + 1779221562.

It is an arithmetic number, because the mean of its divisors is an integer number (320259764520).

Almost surely, 2^{2309428745723} is an apocalyptic number.

2309428745723 is a deficient number, since it is larger than the sum of its proper divisors (252649370437).

2309428745723 is a wasteful number, since it uses less digits than its factorization.

2309428745723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558441897.

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 2309428745723 in words is "two trillion, three hundred nine billion, four hundred twenty-eight million, seven hundred forty-five thousand, seven hundred twenty-three".