20132431000 has 128 divisors (see below), whose sum is σ = 51904307520. Its totient is φ = 7248000000.

The previous prime is 20132430977. The next prime is 20132431013. The reversal of 20132431000 is 13423102.

It is a happy number.

It is a super-2 number, since 2×20132431000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1101940 + ... + 1120060.

Almost surely, 2^20132431000 is an apocalyptic number.

20132431000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20132431000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25952153760).

20132431000 is an abundant number, since it is smaller than the sum of its proper divisors (31771876520).

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

20132431000 is a wasteful number, since it uses less digits than its factorization.

20132431000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18254 (or 18240 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20132431000 its reverse (13423102), we get a palindrome (20145854102).

It can be divided in two parts, 201324 and 31000, that added together give a square (232324 = 482²).

The spelling of 20132431000 in words is "twenty billion, one hundred thirty-two million, four hundred thirty-one thousand".