431023554013 has 4 divisors (see below), whose sum is σ = 464179212028. Its totient is φ = 397867896000.

The previous prime is 431023553981. The next prime is 431023554023. The reversal of 431023554013 is 310455320134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310455320134 = 2 ⋅155227660067.

It can be written as a sum of positive squares in 2 ways, for example, as 228922057764 + 202101496249 = 478458^2 + 449557^2 .

It is a cyclic number.

It is not a de Polignac number, because 431023554013 - 2⁵ = 431023553981 is a prime.

It is a super-2 number, since 2×431023554013² (a number of 24 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 (431023554023) 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, 16577828988 + ... + 16577829013.

It is an arithmetic number, because the mean of its divisors is an integer number (116044803007).

Almost surely, 2^431023554013 is an apocalyptic number.

It is an amenable number.

431023554013 is a deficient number, since it is larger than the sum of its proper divisors (33155658015).

431023554013 is a wasteful number, since it uses less digits than its factorization.

431023554013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33155658014.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 431023554013 its reverse (310455320134), we get a palindrome (741478874147).

The spelling of 431023554013 in words is "four hundred thirty-one billion, twenty-three million, five hundred fifty-four thousand, thirteen".