20131433223 has 48 divisors (see below), whose sum is σ = 31340950272. Its totient is φ = 11395440000.

The previous prime is 20131433183. The next prime is 20131433243. The reversal of 20131433223 is 32233413102.

It is not a de Polignac number, because 20131433223 - 2¹² = 20131429127 is a prime.

It is a super-2 number, since 2×20131433223² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20131433193 and 20131433202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131433243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 833923 + ... + 857723.

It is an arithmetic number, because the mean of its divisors is an integer number (652936464).

Almost surely, 2^20131433223 is an apocalyptic number.

20131433223 is a deficient number, since it is larger than the sum of its proper divisors (11209517049).

20131433223 is a wasteful number, since it uses less digits than its factorization.

20131433223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23924 (or 23905 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20131433223 its reverse (32233413102), we get a palindrome (52364846325).

It can be divided in two parts, 20131 and 433223, that added together give a palindrome (453354).

The spelling of 20131433223 in words is "twenty billion, one hundred thirty-one million, four hundred thirty-three thousand, two hundred twenty-three".