245314333231421 has 4 divisors (see below), whose sum is σ = 245353167230652. Its totient is φ = 245275499232192.

The previous prime is 245314333231397. The next prime is 245314333231423. The reversal of 245314333231421 is 124132333413542.

It is a happy number.

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 126699472039396 + 118614861192025 = 11256086^2 + 10891045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245314333231421 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 (245314333231423) 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, 19416990140 + ... + 19417002773.

It is an arithmetic number, because the mean of its divisors is an integer number (61338291807663).

Almost surely, 2^{245314333231421} is an apocalyptic number.

It is an amenable number.

245314333231421 is a deficient number, since it is larger than the sum of its proper divisors (38833999231).

245314333231421 is an equidigital number, since it uses as much as digits as its factorization.

245314333231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38833999230.

The product of its digits is 622080, while the sum is 41.

Adding to 245314333231421 its reverse (124132333413542), we get a palindrome (369446666644963).

The spelling of 245314333231421 in words is "two hundred forty-five trillion, three hundred fourteen billion, three hundred thirty-three million, two hundred thirty-one thousand, four hundred twenty-one".