253445045231 has 4 divisors (see below), whose sum is σ = 289651480272. Its totient is φ = 217238610192.

The previous prime is 253445045213. The next prime is 253445045257. The reversal of 253445045231 is 132540544352.

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 253445045231 - 2¹⁴ = 253445028847 is a prime.

It is a super-2 number, since 2×253445045231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253445045531) 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, 18103217510 + ... + 18103217523.

It is an arithmetic number, because the mean of its divisors is an integer number (72412870068).

Almost surely, 2^253445045231 is an apocalyptic number.

253445045231 is a deficient number, since it is larger than the sum of its proper divisors (36206435041).

253445045231 is an equidigital number, since it uses as much as digits as its factorization.

253445045231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36206435040.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 253445045231 its reverse (132540544352), we get a palindrome (385985589583).

The spelling of 253445045231 in words is "two hundred fifty-three billion, four hundred forty-five million, forty-five thousand, two hundred thirty-one".