1220031232 has 72 divisors (see below), whose sum is σ = 2829075872. Its totient is φ = 514252800.

The previous prime is 1220031209. The next prime is 1220031259. The reversal of 1220031232 is 2321300221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103732 + ... + 114892.

Almost surely, 2^1220031232 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 1220031232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1414537936).

1220031232 is an abundant number, since it is smaller than the sum of its proper divisors (1609044640).

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

1220031232 is an equidigital number, since it uses as much as digits as its factorization.

1220031232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11245 (or 11231 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1220031232 is about 34928.9454750641. The cubic root of 1220031232 is about 1068.5388481914.

Adding to 1220031232 its reverse (2321300221), we get a palindrome (3541331453).

It can be divided in two parts, 12200 and 31232, that multiplied together give a square (381030400 = 19520²).

The spelling of 1220031232 in words is "one billion, two hundred twenty million, thirty-one thousand, two hundred thirty-two".