31232005422500 has 240 divisors, whose sum is σ = 70517596845696. Its totient is φ = 12092395392000.

The previous prime is 31232005422461. The next prime is 31232005422523. The reversal of 31232005422500 is 522450023213.

It is a super-2 number, since 2×31232005422500² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10706891042 + ... + 10706893958.

Almost surely, 2^{31232005422500} 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 31232005422500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35258798422848).

31232005422500 is an abundant number, since it is smaller than the sum of its proper divisors (39285591423196).

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

31232005422500 is a wasteful number, since it uses less digits than its factorization.

31232005422500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848 (or 3831 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 31232005422500 its reverse (522450023213), we get a palindrome (31754455445713).

The spelling of 31232005422500 in words is "thirty-one trillion, two hundred thirty-two billion, five million, four hundred twenty-two thousand, five hundred".