431313140 has 24 divisors (see below), whose sum is σ = 917226240. Its totient is φ = 170340768.

The previous prime is 431313139. The next prime is 431313151. The reversal of 431313140 is 41313134.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134912 + ... + 138071.

It is an arithmetic number, because the mean of its divisors is an integer number (38217760).

Almost surely, 2^431313140 is an apocalyptic number.

It is an amenable number.

431313140 is an abundant number, since it is smaller than the sum of its proper divisors (485913100).

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

431313140 is a wasteful number, since it uses less digits than its factorization.

431313140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273071 (or 273069 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 431313140 is about 20768.0798342071. The cubic root of 431313140 is about 755.5517741865.

Adding to 431313140 its reverse (41313134), we get a palindrome (472626274).

The spelling of 431313140 in words is "four hundred thirty-one million, three hundred thirteen thousand, one hundred forty".