20231313550 has 36 divisors (see below), whose sum is σ = 43773961680. Its totient is φ = 6936449520.

The previous prime is 20231313499. The next prime is 20231313569. The reversal of 20231313550 is 5531313202.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4126390 + ... + 4131289.

It is an arithmetic number, because the mean of its divisors is an integer number (1215943380).

Almost surely, 2^20231313550 is an apocalyptic number.

20231313550 is an abundant number, since it is smaller than the sum of its proper divisors (23542648130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20231313550 is a wasteful number, since it uses less digits than its factorization.

20231313550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8257705 (or 8257693 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 20231313550 its reverse (5531313202), we get a palindrome (25762626752).

The spelling of 20231313550 in words is "twenty billion, two hundred thirty-one million, three hundred thirteen thousand, five hundred fifty".