131343232020402 has 32 divisors (see below), whose sum is σ = 265014172329984. Its totient is φ = 43393801248000.

The previous prime is 131343232020349. The next prime is 131343232020601. The reversal of 131343232020402 is 204020232343131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 131343232020402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83632599 + ... + 85188602.

It is an arithmetic number, because the mean of its divisors is an integer number (8281692885312).

Almost surely, 2^{131343232020402} is an apocalyptic number.

131343232020402 is an abundant number, since it is smaller than the sum of its proper divisors (133670940309582).

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

131343232020402 is a wasteful number, since it uses less digits than its factorization.

131343232020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168822354.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 131343232020402 its reverse (204020232343131), we get a palindrome (335363464363533).

The spelling of 131343232020402 in words is "one hundred thirty-one trillion, three hundred forty-three billion, two hundred thirty-two million, twenty thousand, four hundred two".