131234200420 has 96 divisors (see below), whose sum is σ = 295369804800. Its totient is φ = 48832560000.

The previous prime is 131234200381. The next prime is 131234200451. The reversal of 131234200420 is 24002432131.

It is a junction number, because it is equal to n+sod(n) for n = 131234200391 and 131234200400.

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, 6762291 + ... + 6781669.

It is an arithmetic number, because the mean of its divisors is an integer number (3076768800).

Almost surely, 2^131234200420 is an apocalyptic number.

131234200420 is a gapful number since it is divisible by the number (10) 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 131234200420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147684902400).

131234200420 is an abundant number, since it is smaller than the sum of its proper divisors (164135604380).

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

131234200420 is a wasteful number, since it uses less digits than its factorization.

131234200420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19729 (or 19727 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 131234200420 its reverse (24002432131), we get a palindrome (155236632551).

The spelling of 131234200420 in words is "one hundred thirty-one billion, two hundred thirty-four million, two hundred thousand, four hundred twenty".