131331445420402 has 64 divisors (see below), whose sum is σ = 205796353086720. Its totient is φ = 62780152571136.

The previous prime is 131331445420361. The next prime is 131331445420471. The reversal of 131331445420402 is 204024544133131.

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, 18032599053 + ... + 18032606335.

It is an arithmetic number, because the mean of its divisors is an integer number (3215568016980).

Almost surely, 2^{131331445420402} is an apocalyptic number.

131331445420402 is a deficient number, since it is larger than the sum of its proper divisors (74464907666318).

131331445420402 is a wasteful number, since it uses less digits than its factorization.

131331445420402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14035.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 131331445420402 its reverse (204024544133131), we get a palindrome (335355989553533).

The spelling of 131331445420402 in words is "one hundred thirty-one trillion, three hundred thirty-one billion, four hundred forty-five million, four hundred twenty thousand, four hundred two".