31425320000 has 140 divisors (see below), whose sum is σ = 80441450496. Its totient is φ = 12164160000.

The previous prime is 31425319997. The next prime is 31425320033. The reversal of 31425320000 is 2352413.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1227329 + ... + 1252671.

Almost surely, 2^31425320000 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 31425320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40220725248).

31425320000 is an abundant number, since it is smaller than the sum of its proper divisors (49016130496).

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

31425320000 is an equidigital number, since it uses as much as digits as its factorization.

31425320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25406 (or 25381 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 31425320000 its reverse (2352413), we get a palindrome (31427672413).

The spelling of 31425320000 in words is "thirty-one billion, four hundred twenty-five million, three hundred twenty thousand".