252420311 has 16 divisors (see below), whose sum is σ = 299503008. Its totient is φ = 209712000.

The previous prime is 252420293. The next prime is 252420323. The reversal of 252420311 is 113024252.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252420311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252420341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5705 + ... + 23181.

It is an arithmetic number, because the mean of its divisors is an integer number (18718938).

Almost surely, 2^252420311 is an apocalyptic number.

252420311 is a deficient number, since it is larger than the sum of its proper divisors (47082697).

252420311 is a wasteful number, since it uses less digits than its factorization.

252420311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17602.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 252420311 is about 15887.7409029730. The cubic root of 252420311 is about 631.9869334144.

Adding to 252420311 its reverse (113024252), we get a palindrome (365444563).

The spelling of 252420311 in words is "two hundred fifty-two million, four hundred twenty thousand, three hundred eleven".