431111140 has 24 divisors (see below), whose sum is σ = 952983360. Its totient is φ = 163368288.

The previous prime is 431111113. The next prime is 431111147. The reversal of 431111140 is 41111134.

It is not an unprimeable number, because it can be changed into a prime (431111147) 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, 566872 + ... + 567631.

It is an arithmetic number, because the mean of its divisors is an integer number (39707640).

Almost surely, 2^431111140 is an apocalyptic number.

It is an amenable number.

431111140 is an abundant number, since it is smaller than the sum of its proper divisors (521872220).

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

431111140 is a wasteful number, since it uses less digits than its factorization.

431111140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134531 (or 1134529 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 431111140 is about 20763.2160322046. The cubic root of 431111140 is about 755.4338047605.

Adding to 431111140 its reverse (41111134), we get a palindrome (472222274).

It can be divided in two parts, 4311 and 11140, that added together give a palindrome (15451).

The spelling of 431111140 in words is "four hundred thirty-one million, one hundred eleven thousand, one hundred forty".