33023131240 has 96 divisors (see below), whose sum is σ = 81964862280. Its totient is φ = 11965184000.

The previous prime is 33023131189. The next prime is 33023131387. The reversal of 33023131240 is 4213132033.

It can be written as a sum of positive squares in 4 ways, for example, as 32790690724 + 232440516 = 181082^2 + 15246^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1347900 + ... + 1372180.

Almost surely, 2^33023131240 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 33023131240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40982431140).

33023131240 is an abundant number, since it is smaller than the sum of its proper divisors (48941731040).

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

33023131240 is a wasteful number, since it uses less digits than its factorization.

33023131240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24595 (or 24580 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 33023131240 its reverse (4213132033), we get a palindrome (37236263273).

The spelling of 33023131240 in words is "thirty-three billion, twenty-three million, one hundred thirty-one thousand, two hundred forty".