1513321211023 has 16 divisors (see below), whose sum is σ = 1558151834400. Its totient is φ = 1469260298880.

The previous prime is 1513321210979. The next prime is 1513321211119. The reversal of 1513321211023 is 3201121233151.

It is a cyclic number.

It is not a de Polignac number, because 1513321211023 - 2²¹ = 1513319113871 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 (1513321212023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 951033 + ... + 1982701.

It is an arithmetic number, because the mean of its divisors is an integer number (97384489650).

Almost surely, 2^{1513321211023} is an apocalyptic number.

1513321211023 is a deficient number, since it is larger than the sum of its proper divisors (44830623377).

1513321211023 is a wasteful number, since it uses less digits than its factorization.

1513321211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032042.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 1513321211023 its reverse (3201121233151), we get a palindrome (4714442444174).

The spelling of 1513321211023 in words is "one trillion, five hundred thirteen billion, three hundred twenty-one million, two hundred eleven thousand, twenty-three".