52131223399 has 2 divisors, whose sum is σ = 52131223400. Its totient is φ = 52131223398.

The previous prime is 52131223379. The next prime is 52131223409. The reversal of 52131223399 is 99332213125.

52131223399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52131223399 is a prime.

It is a super-2 number, since 2×52131223399² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52131223379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26065611699 + 26065611700.

It is an arithmetic number, because the mean of its divisors is an integer number (26065611700).

Almost surely, 2^52131223399 is an apocalyptic number.

52131223399 is a deficient number, since it is larger than the sum of its proper divisors (1).

52131223399 is an equidigital number, since it uses as much as digits as its factorization.

52131223399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 40.

The spelling of 52131223399 in words is "fifty-two billion, one hundred thirty-one million, two hundred twenty-three thousand, three hundred ninety-nine".