23530220351 has 6 divisors (see below), whose sum is σ = 25863796056. Its totient is φ = 21391109300.

The previous prime is 23530220347. The next prime is 23530220401. The reversal of 23530220351 is 15302203532.

It is not a de Polignac number, because 23530220351 - 2² = 23530220347 is a prime.

It is a super-2 number, since 2×23530220351² (a number of 22 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 23530220351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23530210351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97232195 + ... + 97232436.

It is an arithmetic number, because the mean of its divisors is an integer number (4310632676).

Almost surely, 2^23530220351 is an apocalyptic number.

23530220351 is a deficient number, since it is larger than the sum of its proper divisors (2333575705).

23530220351 is a wasteful number, since it uses less digits than its factorization.

23530220351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194464653 (or 194464642 counting only the distinct ones).

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

Adding to 23530220351 its reverse (15302203532), we get a palindrome (38832423883).

It can be divided in two parts, 2 and 3530220351, that added together give a palindrome (3530220353).

The spelling of 23530220351 in words is "twenty-three billion, five hundred thirty million, two hundred twenty thousand, three hundred fifty-one".