431240013 has 12 divisors (see below), whose sum is σ = 631676448. Its totient is φ = 283443720.

The previous prime is 431240011. The next prime is 431240023. The reversal of 431240013 is 310042134.

It is not a de Polignac number, because 431240013 - 2¹ = 431240011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431240011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336795 + ... + 338072.

It is an arithmetic number, because the mean of its divisors is an integer number (52639704).

Almost surely, 2^431240013 is an apocalyptic number.

It is an amenable number.

431240013 is a deficient number, since it is larger than the sum of its proper divisors (200436435).

431240013 is a wasteful number, since it uses less digits than its factorization.

431240013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674944 (or 674941 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 431240013 is about 20766.3191972001. The cubic root of 431240013 is about 755.5090717566.

Adding to 431240013 its reverse (310042134), we get a palindrome (741282147).

The spelling of 431240013 in words is "four hundred thirty-one million, two hundred forty thousand, thirteen".