20313131200 has 168 divisors, whose sum is σ = 52914224880. Its totient is φ = 7661875200.

The previous prime is 20313131159. The next prime is 20313131213. The reversal of 20313131200 is 213131302.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1990110 + ... + 2000290.

Almost surely, 2^20313131200 is an apocalyptic number.

20313131200 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 20313131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26457112440).

20313131200 is an abundant number, since it is smaller than the sum of its proper divisors (32601093680).

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

20313131200 is a wasteful number, since it uses less digits than its factorization.

20313131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275 (or 10260 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20313131200 its reverse (213131302), we get a palindrome (20526262502).

The spelling of 20313131200 in words is "twenty billion, three hundred thirteen million, one hundred thirty-one thousand, two hundred".