232031513 has 12 divisors (see below), whose sum is σ = 270203940. Its totient is φ = 198670752.

The previous prime is 232031473. The next prime is 232031539. The reversal of 232031513 is 315130232.

It can be written as a sum of positive squares in 2 ways, for example, as 229461904 + 2569609 = 15148^2 + 1603^2 .

It is not a de Polignac number, because 232031513 - 2⁸ = 232031257 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 (232033513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58295 + ... + 62147.

It is an arithmetic number, because the mean of its divisors is an integer number (22516995).

Almost surely, 2^232031513 is an apocalyptic number.

It is an amenable number.

232031513 is a deficient number, since it is larger than the sum of its proper divisors (38172427).

232031513 is a wasteful number, since it uses less digits than its factorization.

232031513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096 (or 5089 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 232031513 is about 15232.5806415065. The cubic root of 232031513 is about 614.4911851190.

Adding to 232031513 its reverse (315130232), we get a palindrome (547161745).

It can be divided in two parts, 2320 and 31513, that added together give a palindrome (33833).

The spelling of 232031513 in words is "two hundred thirty-two million, thirty-one thousand, five hundred thirteen".