223021001631513 has 4 divisors (see below), whose sum is σ = 297361335508688. Its totient is φ = 148680667754340.

The previous prime is 223021001631503. The next prime is 223021001631517. The reversal of 223021001631513 is 315136100120322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 223021001631513 - 2⁵ = 223021001631481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223021001631517) 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, 37170166938583 + ... + 37170166938588.

It is an arithmetic number, because the mean of its divisors is an integer number (74340333877172).

Almost surely, 2^{223021001631513} is an apocalyptic number.

It is an amenable number.

223021001631513 is a deficient number, since it is larger than the sum of its proper divisors (74340333877175).

223021001631513 is an equidigital number, since it uses as much as digits as its factorization.

223021001631513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74340333877174.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 223021001631513 its reverse (315136100120322), we get a palindrome (538157101751835).

The spelling of 223021001631513 in words is "two hundred twenty-three trillion, twenty-one billion, one million, six hundred thirty-one thousand, five hundred thirteen".