20231015532 has 72 divisors (see below), whose sum is σ = 59136836976. Its totient is φ = 5335650432.

The previous prime is 20231015473. The next prime is 20231015537. The reversal of 20231015532 is 23551013202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20231015537) 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 23 ways as a sum of consecutive naturals, for example, 1315683 + ... + 1330970.

It is an arithmetic number, because the mean of its divisors is an integer number (821344958).

Almost surely, 2^20231015532 is an apocalyptic number.

It is an amenable number.

20231015532 is an abundant number, since it is smaller than the sum of its proper divisors (38905821444).

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

20231015532 is a wasteful number, since it uses less digits than its factorization.

20231015532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646687 (or 2646678 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20231015532 its reverse (23551013202), we get a palindrome (43782028734).

The spelling of 20231015532 in words is "twenty billion, two hundred thirty-one million, fifteen thousand, five hundred thirty-two".