431321142 has 16 divisors (see below), whose sum is σ = 985876992. Its totient is φ = 123234600.

The previous prime is 431321141. The next prime is 431321167. The reversal of 431321142 is 241123134.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431321141) 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, 5134734 + ... + 5134817.

It is an arithmetic number, because the mean of its divisors is an integer number (61617312).

Almost surely, 2^431321142 is an apocalyptic number.

431321142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

431321142 is an abundant number, since it is smaller than the sum of its proper divisors (554555850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431321142 is a wasteful number, since it uses less digits than its factorization.

431321142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10269563.

The product of its digits is 576, while the sum is 21.

The square root of 431321142 is about 20768.2724847302. The cubic root of 431321142 is about 755.5564466525.

Adding to 431321142 its reverse (241123134), we get a palindrome (672444276).

The spelling of 431321142 in words is "four hundred thirty-one million, three hundred twenty-one thousand, one hundred forty-two".