31033452252 has 96 divisors (see below), whose sum is σ = 79974736128. Its totient is φ = 9365400000.

The previous prime is 31033452227. The next prime is 31033452253. The reversal of 31033452252 is 25225433013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31033452253) 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, 4005102 + ... + 4012842.

It is an arithmetic number, because the mean of its divisors is an integer number (833070168).

Almost surely, 2^31033452252 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 31033452252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39987368064).

31033452252 is an abundant number, since it is smaller than the sum of its proper divisors (48941283876).

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

31033452252 is a wasteful number, since it uses less digits than its factorization.

31033452252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8032 (or 8008 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 31033452252 its reverse (25225433013), we get a palindrome (56258885265).

The spelling of 31033452252 in words is "thirty-one billion, thirty-three million, four hundred fifty-two thousand, two hundred fifty-two".