252020073331 has 4 divisors (see below), whose sum is σ = 271406232832. Its totient is φ = 232633913832.

The previous prime is 252020073269. The next prime is 252020073341. The reversal of 252020073331 is 133370020252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252020073331 - 2²³ = 252011684723 is a prime.

It is a super-2 number, since 2×252020073331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252020073331.

It is not an unprimeable number, because it can be changed into a prime (252020073341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9693079731 + ... + 9693079756.

It is an arithmetic number, because the mean of its divisors is an integer number (67851558208).

Almost surely, 2^252020073331 is an apocalyptic number.

252020073331 is a deficient number, since it is larger than the sum of its proper divisors (19386159501).

252020073331 is a wasteful number, since it uses less digits than its factorization.

252020073331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19386159500.

The product of its (nonzero) digits is 7560, while the sum is 28.

Adding to 252020073331 its reverse (133370020252), we get a palindrome (385390093583).

The spelling of 252020073331 in words is "two hundred fifty-two billion, twenty million, seventy-three thousand, three hundred thirty-one".