20411431200 has 108 divisors (see below), whose sum is σ = 71975834658. Its totient is φ = 5443046400.

The previous prime is 20411431171. The next prime is 20411431301. The reversal of 20411431200 is 213411402.

20411431200 is a `hidden beast` number, since 20 + 4 + 11 + 431 + 200 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 8188802064 + 12222629136 = 90492^2 + 110556^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1410261 + ... + 1424660.

Almost surely, 2^20411431200 is an apocalyptic number.

20411431200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20411431200 is an abundant number, since it is smaller than the sum of its proper divisors (51564403458).

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

20411431200 is a wasteful number, since it uses less digits than its factorization.

20411431200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834947 (or 2834931 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20411431200 its reverse (213411402), we get a palindrome (20624842602).

The spelling of 20411431200 in words is "twenty billion, four hundred eleven million, four hundred thirty-one thousand, two hundred".