20431010100 has 36 divisors (see below), whose sum is σ = 59113723424. Its totient is φ = 5448269280.

The previous prime is 20431010053. The next prime is 20431010107. The reversal of 20431010100 is 101013402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431010107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34051384 + ... + 34051983.

Almost surely, 2^20431010100 is an apocalyptic number.

20431010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20431010100 is an abundant number, since it is smaller than the sum of its proper divisors (38682713324).

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

20431010100 is a wasteful number, since it uses less digits than its factorization.

20431010100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68103384 (or 68103377 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20431010100 its reverse (101013402), we get a palindrome (20532023502).

The spelling of 20431010100 in words is "twenty billion, four hundred thirty-one million, ten thousand, one hundred".