1313031221232 has 40 divisors (see below), whose sum is σ = 3396098992896. Its totient is φ = 437147825856.

The previous prime is 1313031221231. The next prime is 1313031221261. The reversal of 1313031221232 is 2321221303131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313031221231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16498888 + ... + 16578279.

Almost surely, 2^{1313031221232} is an apocalyptic number.

1313031221232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1313031221232 is an abundant number, since it is smaller than the sum of its proper divisors (2083067771664).

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

1313031221232 is a wasteful number, since it uses less digits than its factorization.

1313031221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33078005 (or 33077999 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1313031221232 its reverse (2321221303131), we get a palindrome (3634252524363).

The spelling of 1313031221232 in words is "one trillion, three hundred thirteen billion, thirty-one million, two hundred twenty-one thousand, two hundred thirty-two".