254043520355431 has 4 divisors (see below), whose sum is σ = 257523568579552. Its totient is φ = 250563472131312.

The previous prime is 254043520355389. The next prime is 254043520355441. The reversal of 254043520355431 is 134553025340452.

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 254043520355431 - 2²⁷ = 254043386137703 is a prime.

It is a super-2 number, since 2×254043520355431² (a number of 30 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 (254043520355441) 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, 1740024111951 + ... + 1740024112096.

It is an arithmetic number, because the mean of its divisors is an integer number (64380892144888).

Almost surely, 2^{254043520355431} is an apocalyptic number.

254043520355431 is a deficient number, since it is larger than the sum of its proper divisors (3480048224121).

254043520355431 is an equidigital number, since it uses as much as digits as its factorization.

254043520355431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3480048224120.

The product of its (nonzero) digits is 4320000, while the sum is 46.

Adding to 254043520355431 its reverse (134553025340452), we get a palindrome (388596545695883).

The spelling of 254043520355431 in words is "two hundred fifty-four trillion, forty-three billion, five hundred twenty million, three hundred fifty-five thousand, four hundred thirty-one".