20110312400 has 60 divisors (see below), whose sum is σ = 48419823552. Its totient is φ = 8026677120.

The previous prime is 20110312399. The next prime is 20110312403. The reversal of 20110312400 is 421301102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110312403) 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, 130907 + ... + 239493.

Almost surely, 2^20110312400 is an apocalyptic number.

20110312400 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 20110312400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24209911776).

20110312400 is an abundant number, since it is smaller than the sum of its proper divisors (28309511152).

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

20110312400 is a wasteful number, since it uses less digits than its factorization.

20110312400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109068 (or 109057 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20110312400 its reverse (421301102), we get a palindrome (20531613502).

The spelling of 20110312400 in words is "twenty billion, one hundred ten million, three hundred twelve thousand, four hundred".