431424861 has 48 divisors (see below), whose sum is σ = 731496960. Its totient is φ = 224501760.

The previous prime is 431424803. The next prime is 431424871. The reversal of 431424861 is 168424134.

It is not a de Polignac number, because 431424861 - 2⁷ = 431424733 is a prime.

It is a super-2 number, since 2×431424861² = 372254821377738642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431424871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74685 + ... + 80253.

It is an arithmetic number, because the mean of its divisors is an integer number (15239520).

Almost surely, 2^431424861 is an apocalyptic number.

It is an amenable number.

431424861 is a deficient number, since it is larger than the sum of its proper divisors (300072099).

431424861 is a wasteful number, since it uses less digits than its factorization.

431424861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5634 (or 5627 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 431424861 is about 20770.7693887347. The cubic root of 431424861 is about 755.6170042207.

Adding to 431424861 its reverse (168424134), we get a palindrome (599848995).

The spelling of 431424861 in words is "four hundred thirty-one million, four hundred twenty-four thousand, eight hundred sixty-one".