1313121332 has 6 divisors (see below), whose sum is σ = 2297962338. Its totient is φ = 656560664.

The previous prime is 1313121311. The next prime is 1313121367. The reversal of 1313121332 is 2331213131.

It can be written as a sum of positive squares in only one way, i.e., 951969316 + 361152016 = 30854^2 + 19004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164140163 + ... + 164140170.

It is an arithmetic number, because the mean of its divisors is an integer number (382993723).

Almost surely, 2^1313121332 is an apocalyptic number.

It is an amenable number.

1313121332 is a deficient number, since it is larger than the sum of its proper divisors (984841006).

1313121332 is a wasteful number, since it uses less digits than its factorization.

1313121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328280337 (or 328280335 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 1313121332 is about 36237.0160471306. The cubic root of 1313121332 is about 1095.0525282169.

Adding to 1313121332 its reverse (2331213131), we get a palindrome (3644334463).

The spelling of 1313121332 in words is "one billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred thirty-two".