431256402243623 has 8 divisors (see below), whose sum is σ = 470478520970640. Its totient is φ = 392037115391680.

The previous prime is 431256402243521. The next prime is 431256402243631. The reversal of 431256402243623 is 326342204652134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 431256402243623 - 2¹² = 431256402239527 is a prime.

It is a super-2 number, since 2×431256402243623² (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 (431256422243623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707650340 + ... + 708259497.

It is an arithmetic number, because the mean of its divisors is an integer number (58809815121330).

Almost surely, 2^{431256402243623} is an apocalyptic number.

431256402243623 is a deficient number, since it is larger than the sum of its proper divisors (39222118727017).

431256402243623 is a wasteful number, since it uses less digits than its factorization.

431256402243623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415937537.

The product of its (nonzero) digits is 4976640, while the sum is 47.

Adding to 431256402243623 its reverse (326342204652134), we get a palindrome (757598606895757).

The spelling of 431256402243623 in words is "four hundred thirty-one trillion, two hundred fifty-six billion, four hundred two million, two hundred forty-three thousand, six hundred twenty-three".