31424040432 has 30 divisors (see below), whose sum is σ = 87943669112. Its totient is φ = 10474680096.

The previous prime is 31424040409. The next prime is 31424040433. The reversal of 31424040432 is 23404042413.

It is a happy number.

31424040432 is a `hidden beast` number, since 3 + 14 + 240 + 404 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 31424040396 and 31424040405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424040433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109111108 + ... + 109111395.

Almost surely, 2^31424040432 is an apocalyptic number.

It is an amenable number.

31424040432 is an abundant number, since it is smaller than the sum of its proper divisors (56519628680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31424040432 is a wasteful number, since it uses less digits than its factorization.

31424040432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218222517 (or 218222508 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 31424040432 its reverse (23404042413), we get a palindrome (54828082845).

The spelling of 31424040432 in words is "thirty-one billion, four hundred twenty-four million, forty thousand, four hundred thirty-two".