231232030313 has 4 divisors (see below), whose sum is σ = 231236181060. Its totient is φ = 231227879568.

The previous prime is 231232030303. The next prime is 231232030327. The reversal of 231232030313 is 313030232132.

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 95507575849 + 135724454464 = 309043^2 + 368408^2 .

It is a cyclic number.

It is not a de Polignac number, because 231232030313 - 2²² = 231227836009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (231232030303) 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, 1990658 + ... + 2103611.

It is an arithmetic number, because the mean of its divisors is an integer number (57809045265).

Almost surely, 2^231232030313 is an apocalyptic number.

It is an amenable number.

231232030313 is a deficient number, since it is larger than the sum of its proper divisors (4150747).

231232030313 is an equidigital number, since it uses as much as digits as its factorization.

231232030313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150746.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 231232030313 its reverse (313030232132), we get a palindrome (544262262445).

The spelling of 231232030313 in words is "two hundred thirty-one billion, two hundred thirty-two million, thirty thousand, three hundred thirteen".