231000220321013 has 16 divisors (see below), whose sum is σ = 271385328275712. Its totient is φ = 193846014408000.

The previous prime is 231000220320973. The next prime is 231000220321021. The reversal of 231000220321013 is 310123022000132.

It is a cyclic number.

It is not a de Polignac number, because 231000220321013 - 2¹⁶ = 231000220255477 is a prime.

It is a super-2 number, since 2×231000220321013² (a number of 30 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 (231000220321513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126689543 + ... + 128499963.

It is an arithmetic number, because the mean of its divisors is an integer number (16961583017232).

Almost surely, 2^{231000220321013} is an apocalyptic number.

It is an amenable number.

231000220321013 is a deficient number, since it is larger than the sum of its proper divisors (40385107954699).

231000220321013 is a wasteful number, since it uses less digits than its factorization.

231000220321013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702716.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231000220321013 its reverse (310123022000132), we get a palindrome (541123242321145).

The spelling of 231000220321013 in words is "two hundred thirty-one trillion, two hundred twenty million, three hundred twenty-one thousand, thirteen".