431231432 has 8 divisors (see below), whose sum is σ = 808558950. Its totient is φ = 215615712.

The previous prime is 431231431. The next prime is 431231441. The reversal of 431231432 is 234132134.

It can be written as a sum of positive squares in only one way, i.e., 346480996 + 84750436 = 18614^2 + 9206^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 431231398 and 431231407.

It is not an unprimeable number, because it can be changed into a prime (431231431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26951957 + ... + 26951972.

Almost surely, 2^431231432 is an apocalyptic number.

It is an amenable number.

431231432 is a deficient number, since it is larger than the sum of its proper divisors (377327518).

431231432 is a wasteful number, since it uses less digits than its factorization.

431231432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53903935 (or 53903931 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 431231432 is about 20766.1125875788. The cubic root of 431231432 is about 755.5040605748.

Adding to 431231432 its reverse (234132134), we get a palindrome (665363566).

The spelling of 431231432 in words is "four hundred thirty-one million, two hundred thirty-one thousand, four hundred thirty-two".