20533231434 has 8 divisors (see below), whose sum is σ = 41066462880. Its totient is φ = 6844410476.

The previous prime is 20533231409. The next prime is 20533231441. The reversal of 20533231434 is 43413233502.

It is a sphenic number, since it is the product of 3 distinct primes.

20533231434 is an admirable number.

It is a super-2 number, since 2×20533231434² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711102614 + ... + 1711102625.

It is an arithmetic number, because the mean of its divisors is an integer number (5133307860).

Almost surely, 2^20533231434 is an apocalyptic number.

20533231434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20533231434 is a wasteful number, since it uses less digits than its factorization.

20533231434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422205244.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 20533231434 its reverse (43413233502), we get a palindrome (63946464936).

The spelling of 20533231434 in words is "twenty billion, five hundred thirty-three million, two hundred thirty-one thousand, four hundred thirty-four".