1313223132 has 24 divisors (see below), whose sum is σ = 3299894416. Its totient is φ = 404068608.

The previous prime is 1313223101. The next prime is 1313223221. The reversal of 1313223132 is 2313223131.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1313223099 and 1313223108.

It is a congruent number.

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, 4208893 + ... + 4209204.

Almost surely, 2^1313223132 is an apocalyptic number.

1313223132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1313223132 is an abundant number, since it is smaller than the sum of its proper divisors (1986671284).

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

1313223132 is a wasteful number, since it uses less digits than its factorization.

1313223132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418117 (or 8418115 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 1313223132 is about 36238.4206609504. The cubic root of 1313223132 is about 1095.0808255428.

Adding to 1313223132 its reverse (2313223131), we get a palindrome (3626446263).

Subtracting 1313223132 from its reverse (2313223131), we obtain a palindrome (999999999).

The spelling of 1313223132 in words is "one billion, three hundred thirteen million, two hundred twenty-three thousand, one hundred thirty-two".