20232503531 has 4 divisors (see below), whose sum is σ = 20232790872. Its totient is φ = 20232216192.

The previous prime is 20232503527. The next prime is 20232503611. The reversal of 20232503531 is 13530523202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20232503531 - 2² = 20232503527 is a prime.

It is a super-2 number, since 2×20232503531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20232503531.

It is not an unprimeable number, because it can be changed into a prime (20232503231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41516 + ... + 205398.

It is an arithmetic number, because the mean of its divisors is an integer number (5058197718).

Almost surely, 2^20232503531 is an apocalyptic number.

20232503531 is a deficient number, since it is larger than the sum of its proper divisors (287341).

20232503531 is a wasteful number, since it uses less digits than its factorization.

20232503531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287340.

The product of its (nonzero) digits is 5400, while the sum is 26.

The spelling of 20232503531 in words is "twenty billion, two hundred thirty-two million, five hundred three thousand, five hundred thirty-one".