431322231 has 16 divisors (see below), whose sum is σ = 584064000. Its totient is φ = 283076640.

The previous prime is 431322223. The next prime is 431322239. The reversal of 431322231 is 132223134.

It is an interprime number because it is at equal distance from previous prime (431322223) and next prime (431322239).

It is not a de Polignac number, because 431322231 - 2³ = 431322223 is a prime.

It is a super-2 number, since 2×431322231² = 372077733909634722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431322198 and 431322207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431322239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214770 + ... + 216768.

It is an arithmetic number, because the mean of its divisors is an integer number (36504000).

Almost surely, 2^431322231 is an apocalyptic number.

431322231 is a deficient number, since it is larger than the sum of its proper divisors (152741769).

431322231 is a wasteful number, since it uses less digits than its factorization.

431322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086.

The product of its digits is 864, while the sum is 21.

The square root of 431322231 is about 20768.2987025900. The cubic root of 431322231 is about 755.5570825285.

Adding to 431322231 its reverse (132223134), we get a palindrome (563545365).

The spelling of 431322231 in words is "four hundred thirty-one million, three hundred twenty-two thousand, two hundred thirty-one".