431220121143 has 64 divisors (see below), whose sum is σ = 705909012480. Its totient is φ = 228533760000.

The previous prime is 431220121133. The next prime is 431220121181. The reversal of 431220121143 is 341121022134.

It is not a de Polignac number, because 431220121143 - 2¹³ = 431220112951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431220121133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76063513 + ... + 76069181.

It is an arithmetic number, because the mean of its divisors is an integer number (11029828320).

Almost surely, 2^431220121143 is an apocalyptic number.

431220121143 is a deficient number, since it is larger than the sum of its proper divisors (274688891337).

431220121143 is a wasteful number, since it uses less digits than its factorization.

431220121143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8768.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 431220121143 its reverse (341121022134), we get a palindrome (772341143277).

Subtracting from 431220121143 its reverse (341121022134), we obtain a palindrome (90099099009).

The spelling of 431220121143 in words is "four hundred thirty-one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred forty-three".