245343431243523 has 4 divisors (see below), whose sum is σ = 327124574991368. Its totient is φ = 163562287495680.

The previous prime is 245343431243513. The next prime is 245343431243567. The reversal of 245343431243523 is 325342134343542.

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

It is not a de Polignac number, because 245343431243523 - 2¹² = 245343431239427 is a prime.

It is a super-3 number, since 3×245343431243523³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245343431243513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40890571873918 + ... + 40890571873923.

It is an arithmetic number, because the mean of its divisors is an integer number (81781143747842).

Almost surely, 2^{245343431243523} is an apocalyptic number.

245343431243523 is a deficient number, since it is larger than the sum of its proper divisors (81781143747845).

245343431243523 is an equidigital number, since it uses as much as digits as its factorization.

245343431243523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81781143747844.

The product of its digits is 12441600, while the sum is 48.

The spelling of 245343431243523 in words is "two hundred forty-five trillion, three hundred forty-three billion, four hundred thirty-one million, two hundred forty-three thousand, five hundred twenty-three".