823609896313 has 2 divisors, whose sum is σ = 823609896314. Its totient is φ = 823609896312.

The previous prime is 823609896293. The next prime is 823609896323. The reversal of 823609896313 is 313698906328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 578439344704 + 245170551609 = 760552^2 + 495147^2 .

It is a cyclic number.

It is not a de Polignac number, because 823609896313 - 2¹⁷ = 823609765241 is a prime.

It is a super-2 number, since 2×823609896313² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (823609896323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411804948156 + 411804948157.

It is an arithmetic number, because the mean of its divisors is an integer number (411804948157).

Almost surely, 2^823609896313 is an apocalyptic number.

It is an amenable number.

823609896313 is a deficient number, since it is larger than the sum of its proper divisors (1).

823609896313 is an equidigital number, since it uses as much as digits as its factorization.

823609896313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10077696, while the sum is 58.

The spelling of 823609896313 in words is "eight hundred twenty-three billion, six hundred nine million, eight hundred ninety-six thousand, three hundred thirteen".