20240312031523 has 4 divisors (see below), whose sum is σ = 20251818748480. Its totient is φ = 20228805314568.

The previous prime is 20240312031491. The next prime is 20240312031553. The reversal of 20240312031523 is 32513021304202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20240312031523 - 2⁵ = 20240312031491 is a prime.

It is a super-2 number, since 2×20240312031523² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20240312031491 and 20240312031500.

It is not an unprimeable number, because it can be changed into a prime (20240312031553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5753355840 + ... + 5753359357.

It is an arithmetic number, because the mean of its divisors is an integer number (5062954687120).

Almost surely, 2^{20240312031523} is an apocalyptic number.

20240312031523 is a deficient number, since it is larger than the sum of its proper divisors (11506716957).

20240312031523 is a wasteful number, since it uses less digits than its factorization.

20240312031523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11506716956.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20240312031523 its reverse (32513021304202), we get a palindrome (52753333335725).

The spelling of 20240312031523 in words is "twenty trillion, two hundred forty billion, three hundred twelve million, thirty-one thousand, five hundred twenty-three".