252304231261 has 4 divisors (see below), whose sum is σ = 252506237500. Its totient is φ = 252102225024.

The previous prime is 252304231259. The next prime is 252304231271. The reversal of 252304231261 is 162132403252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 135879967161 + 116424264100 = 368619^2 + 341210^2 .

It is a cyclic number.

It is not a de Polignac number, because 252304231261 - 2¹ = 252304231259 is a prime.

It is a super-2 number, since 2×252304231261² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252304231211) 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, 101001246 + ... + 101003743.

It is an arithmetic number, because the mean of its divisors is an integer number (63126559375).

Almost surely, 2^252304231261 is an apocalyptic number.

It is an amenable number.

252304231261 is a deficient number, since it is larger than the sum of its proper divisors (202006239).

252304231261 is a wasteful number, since it uses less digits than its factorization.

252304231261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202006238.

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 252304231261 in words is "two hundred fifty-two billion, three hundred four million, two hundred thirty-one thousand, two hundred sixty-one".