431213131 has 8 divisors (see below), whose sum is σ = 464477184. Its totient is φ = 399158760.

The previous prime is 431213129. The next prime is 431213147. The reversal of 431213131 is 131312134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 431213131 - 2¹ = 431213129 is a prime.

It is a super-2 number, since 2×431213131² = 371889528693646322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431213099 and 431213108.

It is not an unprimeable number, because it can be changed into a prime (431213191) 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, 301681 + ... + 303106.

It is an arithmetic number, because the mean of its divisors is an integer number (58059648).

Almost surely, 2^431213131 is an apocalyptic number.

431213131 is a deficient number, since it is larger than the sum of its proper divisors (33264053).

431213131 is a wasteful number, since it uses less digits than its factorization.

431213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604841.

The product of its digits is 216, while the sum is 19.

The square root of 431213131 is about 20765.6719371178. The cubic root of 431213131 is about 755.4933728292.

Adding to 431213131 its reverse (131312134), we get a palindrome (562525265).

The spelling of 431213131 in words is "four hundred thirty-one million, two hundred thirteen thousand, one hundred thirty-one".