31424000240 has 40 divisors (see below), whose sum is σ = 76237361568. Its totient is φ = 12023095040.

The previous prime is 31424000239. The next prime is 31424000273. The reversal of 31424000240 is 4200042413.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8537291 + ... + 8540970.

Almost surely, 2^31424000240 is an apocalyptic number.

It is an amenable number.

31424000240 is an abundant number, since it is smaller than the sum of its proper divisors (44813361328).

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

31424000240 is a wasteful number, since it uses less digits than its factorization.

31424000240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17078297 (or 17078291 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 31424000240 its reverse (4200042413), we get a palindrome (35624042653).

The spelling of 31424000240 in words is "thirty-one billion, four hundred twenty-four million, two hundred forty", and thus it is an aban number.