31240204000 has 192 divisors, whose sum is σ = 78807193920. Its totient is φ = 12166963200.

The previous prime is 31240203989. The next prime is 31240204007. The reversal of 31240204000 is 40204213.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240204007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24235356 + ... + 24236644.

It is an arithmetic number, because the mean of its divisors is an integer number (410454135).

Almost surely, 2^31240204000 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 31240204000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39403596960).

31240204000 is an abundant number, since it is smaller than the sum of its proper divisors (47566989920).

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

31240204000 is a wasteful number, since it uses less digits than its factorization.

31240204000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 31240204000 its reverse (40204213), we get a palindrome (31280408213).

The spelling of 31240204000 in words is "thirty-one billion, two hundred forty million, two hundred four thousand".