2145331232 has 96 divisors (see below), whose sum is σ = 4831130304. Its totient is φ = 928972800.

The previous prime is 2145331207. The next prime is 2145331247. The reversal of 2145331232 is 2321335412.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618848 + ... + 622304.

It is an arithmetic number, because the mean of its divisors is an integer number (50324274).

Almost surely, 2^2145331232 is an apocalyptic number.

2145331232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2145331232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2415565152).

2145331232 is an abundant number, since it is smaller than the sum of its proper divisors (2685799072).

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

2145331232 is a wasteful number, since it uses less digits than its factorization.

2145331232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562 (or 3554 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 2145331232 is about 46317.7204965875. The cubic root of 2145331232 is about 1289.7279702020.

Adding to 2145331232 its reverse (2321335412), we get a palindrome (4466666644).

The spelling of 2145331232 in words is "two billion, one hundred forty-five million, three hundred thirty-one thousand, two hundred thirty-two".