131324321402 has 8 divisors (see below), whose sum is σ = 196988992500. Its totient is φ = 65661323904.

The previous prime is 131324321357. The next prime is 131324321407. The reversal of 131324321402 is 204123423131.

It can be written as a sum of positive squares in 2 ways, for example, as 130956410641 + 367910761 = 361879^2 + 19181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (131324321407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199277 + ... + 549872.

Almost surely, 2^131324321402 is an apocalyptic number.

131324321402 is a deficient number, since it is larger than the sum of its proper divisors (65664671098).

131324321402 is an equidigital number, since it uses as much as digits as its factorization.

131324321402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836800.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 131324321402 its reverse (204123423131), we get a palindrome (335447744533).

The spelling of 131324321402 in words is "one hundred thirty-one billion, three hundred twenty-four million, three hundred twenty-one thousand, four hundred two".