3231772220 has 12 divisors (see below), whose sum is σ = 6786721704. Its totient is φ = 1292708880.

The previous prime is 3231772213. The next prime is 3231772231. The reversal of 3231772220 is 222771323.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80794286 + ... + 80794325.

It is an arithmetic number, because the mean of its divisors is an integer number (565560142).

Almost surely, 2^3231772220 is an apocalyptic number.

It is an amenable number.

3231772220 is an abundant number, since it is smaller than the sum of its proper divisors (3554949484).

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

3231772220 is a wasteful number, since it uses less digits than its factorization.

3231772220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161588620 (or 161588618 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 3231772220 is about 56848.6782608004. The cubic root of 3231772220 is about 1478.4736241693.

The spelling of 3231772220 in words is "three billion, two hundred thirty-one million, seven hundred seventy-two thousand, two hundred twenty".