1232320013 has 16 divisors (see below), whose sum is σ = 1320333696. Its totient is φ = 1147523520.

The previous prime is 1232320009. The next prime is 1232320057. The reversal of 1232320013 is 3100232321.

It is a cyclic number.

It is not a de Polignac number, because 1232320013 - 2² = 1232320009 is a prime.

It is a super-2 number, since 2×1232320013² = 3037225228880640338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232319973 and 1232320000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232326013) 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, 155831 + ... + 163547.

It is an arithmetic number, because the mean of its divisors is an integer number (82520856).

Almost surely, 2^1232320013 is an apocalyptic number.

It is an amenable number.

1232320013 is a deficient number, since it is larger than the sum of its proper divisors (88013683).

1232320013 is a wasteful number, since it uses less digits than its factorization.

1232320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7924.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1232320013 is about 35104.4158618257. The cubic root of 1232320013 is about 1072.1144936583.

Adding to 1232320013 its reverse (3100232321), we get a palindrome (4332552334).

The spelling of 1232320013 in words is "one billion, two hundred thirty-two million, three hundred twenty thousand, thirteen".