1313233031021 has 8 divisors (see below), whose sum is σ = 1343836448064. Its totient is φ = 1282632482880.

The previous prime is 1313233030999. The next prime is 1313233031027. The reversal of 1313233031021 is 1201303323131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313233031021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313233031027) 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, 223136 + ... + 1635926.

It is an arithmetic number, because the mean of its divisors is an integer number (167979556008).

Almost surely, 2^{1313233031021} is an apocalyptic number.

It is an amenable number.

1313233031021 is a deficient number, since it is larger than the sum of its proper divisors (30603417043).

1313233031021 is a wasteful number, since it uses less digits than its factorization.

1313233031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434451.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1313233031021 its reverse (1201303323131), we get a palindrome (2514536354152).

The spelling of 1313233031021 in words is "one trillion, three hundred thirteen billion, two hundred thirty-three million, thirty-one thousand, twenty-one".