1232011313 has 4 divisors (see below), whose sum is σ = 1326781428. Its totient is φ = 1137241200.

The previous prime is 1232011303. The next prime is 1232011373. The reversal of 1232011313 is 3131102321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 131629729 + 1100381584 = 11473^2 + 33172^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232011313 - 2²⁶ = 1164902449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232011291 and 1232011300.

It is not an unprimeable number, because it can be changed into a prime (1232011303) 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, 47385038 + ... + 47385063.

It is an arithmetic number, because the mean of its divisors is an integer number (331695357).

Almost surely, 2^1232011313 is an apocalyptic number.

1232011313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1232011313 is a deficient number, since it is larger than the sum of its proper divisors (94770115).

1232011313 is an equidigital number, since it uses as much as digits as its factorization.

1232011313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94770114.

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

The square root of 1232011313 is about 35100.0187036987. The cubic root of 1232011313 is about 1072.0249635091.

Adding to 1232011313 its reverse (3131102321), we get a palindrome (4363113634).

The spelling of 1232011313 in words is "one billion, two hundred thirty-two million, eleven thousand, three hundred thirteen".