431232140423432 has 32 divisors (see below), whose sum is σ = 856123865665920. Its totient is φ = 202932479473920.

The previous prime is 431232140423431. The next prime is 431232140423437. The reversal of 431232140423432 is 234324041232134.

It is a super-2 number, since 2×431232140423432² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (431232140423431) 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, 114153653 + ... + 117870779.

It is an arithmetic number, because the mean of its divisors is an integer number (26753870802060).

Almost surely, 2^{431232140423432} is an apocalyptic number.

It is an amenable number.

431232140423432 is a deficient number, since it is larger than the sum of its proper divisors (424891725242488).

431232140423432 is a wasteful number, since it uses less digits than its factorization.

431232140423432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4570181 (or 4570177 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 431232140423432 its reverse (234324041232134), we get a palindrome (665556181655566).

The spelling of 431232140423432 in words is "four hundred thirty-one trillion, two hundred thirty-two billion, one hundred forty million, four hundred twenty-three thousand, four hundred thirty-two".