431126256230551 has 4 divisors (see below), whose sum is σ = 492715721406352. Its totient is φ = 369536791054752.

The previous prime is 431126256230497. The next prime is 431126256230591. The reversal of 431126256230551 is 155032652621134.

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 431126256230551 - 2⁹ = 431126256230039 is a prime.

It is a super-2 number, since 2×431126256230551² (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 (431126256230591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30794732587890 + ... + 30794732587903.

It is an arithmetic number, because the mean of its divisors is an integer number (123178930351588).

Almost surely, 2^{431126256230551} is an apocalyptic number.

431126256230551 is a deficient number, since it is larger than the sum of its proper divisors (61589465175801).

431126256230551 is an equidigital number, since it uses as much as digits as its factorization.

431126256230551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61589465175800.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 431126256230551 in words is "four hundred thirty-one trillion, one hundred twenty-six billion, two hundred fifty-six million, two hundred thirty thousand, five hundred fifty-one".