3128523823 has 2 divisors, whose sum is σ = 3128523824. Its totient is φ = 3128523822.

The previous prime is 3128523767. The next prime is 3128523841. The reversal of 3128523823 is 3283258213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3128523823 - 2¹³ = 3128515631 is a prime.

It is a super-2 number, since 2×3128523823² = 19575322622157070658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3128523883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564261911 + 1564261912.

It is an arithmetic number, because the mean of its divisors is an integer number (1564261912).

Almost surely, 2^3128523823 is an apocalyptic number.

3128523823 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128523823 is an equidigital number, since it uses as much as digits as its factorization.

3128523823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 3128523823 is about 55933.2085884584. The cubic root of 3128523823 is about 1462.5581944652.

The spelling of 3128523823 in words is "three billion, one hundred twenty-eight million, five hundred twenty-three thousand, eight hundred twenty-three".