131243333400 has 192 divisors, whose sum is σ = 452314800000. Its totient is φ = 34978527360.

The previous prime is 131243333399. The next prime is 131243333413. The reversal of 131243333400 is 4333342131.

131243333400 is a `hidden beast` number, since 1 + 312 + 4 + 3 + 3 + 3 + 340 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11328811 + ... + 11340389.

It is an arithmetic number, because the mean of its divisors is an integer number (2355806250).

Almost surely, 2^131243333400 is an apocalyptic number.

131243333400 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 131243333400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226157400000).

131243333400 is an abundant number, since it is smaller than the sum of its proper divisors (321071466600).

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

131243333400 is a wasteful number, since it uses less digits than its factorization.

131243333400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13703 (or 13688 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 131243333400 its reverse (4333342131), we get a palindrome (135576675531).

The spelling of 131243333400 in words is "one hundred thirty-one billion, two hundred forty-three million, three hundred thirty-three thousand, four hundred".