252343431 has 20 divisors (see below), whose sum is σ = 379377592. Its totient is φ = 167149008.

The previous prime is 252343411. The next prime is 252343439. The reversal of 252343431 is 134343252.

252343431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252343431 - 2⁷ = 252343303 is a prime.

It is a super-2 number, since 2×252343431² = 127354414337703522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252343395 and 252343404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252343439) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2796 + ... + 22638.

Almost surely, 2^252343431 is an apocalyptic number.

252343431 is a deficient number, since it is larger than the sum of its proper divisors (127034161).

252343431 is a wasteful number, since it uses less digits than its factorization.

252343431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20012 (or 20003 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 252343431 is about 15885.3212432107. The cubic root of 252343431 is about 631.9227651906.

Adding to 252343431 its reverse (134343252), we get a palindrome (386686683).

It can be divided in two parts, 2523 and 43431, that added together give a palindrome (45954).

The spelling of 252343431 in words is "two hundred fifty-two million, three hundred forty-three thousand, four hundred thirty-one".