1313401120521 has 32 divisors (see below), whose sum is σ = 2003177299968. Its totient is φ = 749838703680.

The previous prime is 1313401120517. The next prime is 1313401120543. The reversal of 1313401120521 is 1250211043131.

It is not a de Polignac number, because 1313401120521 - 2² = 1313401120517 is a prime.

It is a super-2 number, since 2×1313401120521² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1313401120491 and 1313401120500.

It is not an unprimeable number, because it can be changed into a prime (1313401125521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160813980 + ... + 160822146.

It is an arithmetic number, because the mean of its divisors is an integer number (62599290624).

Almost surely, 2^{1313401120521} is an apocalyptic number.

It is an amenable number.

1313401120521 is a deficient number, since it is larger than the sum of its proper divisors (689776179447).

1313401120521 is a wasteful number, since it uses less digits than its factorization.

1313401120521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14141.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 1313401120521 its reverse (1250211043131), we get a palindrome (2563612163652).

The spelling of 1313401120521 in words is "one trillion, three hundred thirteen billion, four hundred one million, one hundred twenty thousand, five hundred twenty-one".