254332431221 has 4 divisors (see below), whose sum is σ = 277453561344. Its totient is φ = 231211301100.

The previous prime is 254332431203. The next prime is 254332431253. The reversal of 254332431221 is 122134233452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 254332431221 - 2²² = 254328236917 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 (254332431121) 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, 11560565045 + ... + 11560565066.

It is an arithmetic number, because the mean of its divisors is an integer number (69363390336).

Almost surely, 2^254332431221 is an apocalyptic number.

It is an amenable number.

254332431221 is a deficient number, since it is larger than the sum of its proper divisors (23121130123).

254332431221 is a wasteful number, since it uses less digits than its factorization.

254332431221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23121130122.

The product of its digits is 34560, while the sum is 32.

Adding to 254332431221 its reverse (122134233452), we get a palindrome (376466664673).

The spelling of 254332431221 in words is "two hundred fifty-four billion, three hundred thirty-two million, four hundred thirty-one thousand, two hundred twenty-one".