1310231324021 has 4 divisors (see below), whose sum is σ = 1310271170700. Its totient is φ = 1310191477344.

The previous prime is 1310231323981. The next prime is 1310231324069. The reversal of 1310231324021 is 1204231320131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 950938975921 + 359292348100 = 975161^2 + 599410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310231324021 is a prime.

It is a super-2 number, since 2×1310231324021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310231324071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19873976 + ... + 19939793.

It is an arithmetic number, because the mean of its divisors is an integer number (327567792675).

Almost surely, 2^{1310231324021} is an apocalyptic number.

It is an amenable number.

1310231324021 is a deficient number, since it is larger than the sum of its proper divisors (39846679).

1310231324021 is an equidigital number, since it uses as much as digits as its factorization.

1310231324021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39846678.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1310231324021 its reverse (1204231320131), we get a palindrome (2514462644152).

The spelling of 1310231324021 in words is "one trillion, three hundred ten billion, two hundred thirty-one million, three hundred twenty-four thousand, twenty-one".