131402242320402 has 128 divisors (see below), whose sum is σ = 287935324604928. Its totient is φ = 39811905536000.

The previous prime is 131402242320367. The next prime is 131402242320449. The reversal of 131402242320402 is 204023242204131.

It is a self number, because there is not a number n which added to its sum of digits gives 131402242320402.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2097940078 + ... + 2098002710.

It is an arithmetic number, because the mean of its divisors is an integer number (2249494723476).

Almost surely, 2^{131402242320402} is an apocalyptic number.

131402242320402 is an abundant number, since it is smaller than the sum of its proper divisors (156533082284526).

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

131402242320402 is a wasteful number, since it uses less digits than its factorization.

131402242320402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67764.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 131402242320402 its reverse (204023242204131), we get a palindrome (335425484524533).

The spelling of 131402242320402 in words is "one hundred thirty-one trillion, four hundred two billion, two hundred forty-two million, three hundred twenty thousand, four hundred two".