1220231332 has 6 divisors (see below), whose sum is σ = 2135404838. Its totient is φ = 610115664.

The previous prime is 1220231329. The next prime is 1220231359. The reversal of 1220231332 is 2331320221.

It can be written as a sum of positive squares in only one way, i.e., 789834816 + 430396516 = 28104^2 + 20746^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152528913 + ... + 152528920.

Almost surely, 2^1220231332 is an apocalyptic number.

It is an amenable number.

1220231332 is a deficient number, since it is larger than the sum of its proper divisors (915173506).

1220231332 is a wasteful number, since it uses less digits than its factorization.

1220231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305057837 (or 305057835 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1220231332 is about 34931.8097441286. The cubic root of 1220231332 is about 1068.5972627985.

Adding to 1220231332 its reverse (2331320221), we get a palindrome (3551551553).

Subtracting 1220231332 from its reverse (2331320221), we obtain a square (1111088889 = 33333²).

It can be divided in two parts, 12202 and 31332, that added together give a palindrome (43534).

The spelling of 1220231332 in words is "one billion, two hundred twenty million, two hundred thirty-one thousand, three hundred thirty-two".