20243031435 has 128 divisors (see below), whose sum is σ = 42073758720. Its totient is φ = 9125222400.

The previous prime is 20243031397. The next prime is 20243031491. The reversal of 20243031435 is 53413034202.

It is not a de Polignac number, because 20243031435 - 2¹³ = 20243023243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20243031399 and 20243031408.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2090505 + ... + 2100165.

It is an arithmetic number, because the mean of its divisors is an integer number (328701240).

Almost surely, 2^20243031435 is an apocalyptic number.

20243031435 is an abundant number, since it is smaller than the sum of its proper divisors (21830727285).

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

20243031435 is a wasteful number, since it uses less digits than its factorization.

20243031435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9786 (or 9780 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20243031435 its reverse (53413034202), we get a palindrome (73656065637).

The spelling of 20243031435 in words is "twenty billion, two hundred forty-three million, thirty-one thousand, four hundred thirty-five".