31425424000 has 128 divisors (see below), whose sum is σ = 78363417600. Its totient is φ = 12532864000.

The previous prime is 31425423989. The next prime is 31425424027. The reversal of 31425424000 is 42452413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5741265 + ... + 5746735.

It is an arithmetic number, because the mean of its divisors is an integer number (612214200).

Almost surely, 2^31425424000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31425424000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39181708800).

31425424000 is an abundant number, since it is smaller than the sum of its proper divisors (46937993600).

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

31425424000 is an equidigital number, since it uses as much as digits as its factorization.

31425424000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859 (or 5837 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 31425424000 its reverse (42452413), we get a palindrome (31467876413).

The spelling of 31425424000 in words is "thirty-one billion, four hundred twenty-five million, four hundred twenty-four thousand".