20232513 has 24 divisors (see below), whose sum is σ = 34115328. Its totient is φ = 11313792.

The previous prime is 20232493. The next prime is 20232521. The reversal of 20232513 is 31523202.

It is not a de Polignac number, because 20232513 - 2⁸ = 20232257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20232013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 456 + ... + 6377.

It is an arithmetic number, because the mean of its divisors is an integer number (1421472).

Almost surely, 2^20232513 is an apocalyptic number.

It is an amenable number.

20232513 is a deficient number, since it is larger than the sum of its proper divisors (13882815).

20232513 is a wasteful number, since it uses less digits than its factorization.

20232513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893 (or 6890 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20232513 is about 4498.0565803467. The cubic root of 20232513 is about 272.4896071002.

Adding to 20232513 its reverse (31523202), we get a palindrome (51755715).

The spelling of 20232513 in words is "twenty million, two hundred thirty-two thousand, five hundred thirteen".