31425532000 has 96 divisors (see below), whose sum is σ = 77280787584. Its totient is φ = 12559104000.

The previous prime is 31425531983. The next prime is 31425532003. The reversal of 31425532000 is 23552413.

It is a super-2 number, since 2×31425532000² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425532003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5689240 + ... + 5694760.

It is an arithmetic number, because the mean of its divisors is an integer number (805008204).

Almost surely, 2^31425532000 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 31425532000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38640393792).

31425532000 is an abundant number, since it is smaller than the sum of its proper divisors (45855255584).

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

31425532000 is a wasteful number, since it uses less digits than its factorization.

31425532000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6969 (or 6951 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 31425532000 in words is "thirty-one billion, four hundred twenty-five million, five hundred thirty-two thousand".