131404413402 has 128 divisors (see below), whose sum is σ = 311028940800. Its totient is φ = 41006347200.

The previous prime is 131404413337. The next prime is 131404413407. The reversal of 131404413402 is 204314404131.

131404413402 is a `hidden beast` number, since 1 + 314 + 0 + 4 + 4 + 1 + 340 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (131404413407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30764527 + ... + 30768797.

It is an arithmetic number, because the mean of its divisors is an integer number (2429913600).

Almost surely, 2^131404413402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131404413402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155514470400).

131404413402 is an abundant number, since it is smaller than the sum of its proper divisors (179624527398).

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

131404413402 is a wasteful number, since it uses less digits than its factorization.

131404413402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649 (or 4643 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 131404413402 its reverse (204314404131), we get a palindrome (335718817533).

The spelling of 131404413402 in words is "one hundred thirty-one billion, four hundred four million, four hundred thirteen thousand, four hundred two".