123321001013 has 32 divisors (see below), whose sum is σ = 147101391360. Its totient is φ = 101193200640.

The previous prime is 123321001009. The next prime is 123321001039. The reversal of 123321001013 is 310100123321.

It is not a de Polignac number, because 123321001013 - 2² = 123321001009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123321000982 and 123321001000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123321001613) 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, 4112408 + ... + 4142286.

It is an arithmetic number, because the mean of its divisors is an integer number (4596918480).

Almost surely, 2^123321001013 is an apocalyptic number.

It is an amenable number.

123321001013 is a deficient number, since it is larger than the sum of its proper divisors (23780390347).

123321001013 is a wasteful number, since it uses less digits than its factorization.

123321001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30197.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 123321001013 its reverse (310100123321), we get a palindrome (433421124334).

The spelling of 123321001013 in words is "one hundred twenty-three billion, three hundred twenty-one million, one thousand, thirteen".