131650040402 has 8 divisors (see below), whose sum is σ = 197646334716. Its totient is φ = 65767928832.

The previous prime is 131650040381. The next prime is 131650040411. The reversal of 131650040402 is 204040056131.

It can be written as a sum of positive squares in 2 ways, for example, as 130878256441 + 771783961 = 361771^2 + 27781^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28542803 + ... + 28547414.

Almost surely, 2^131650040402 is an apocalyptic number.

131650040402 is a deficient number, since it is larger than the sum of its proper divisors (65996294314).

131650040402 is a wasteful number, since it uses less digits than its factorization.

131650040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57091372.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 131650040402 its reverse (204040056131), we get a palindrome (335690096533).

The spelling of 131650040402 in words is "one hundred thirty-one billion, six hundred fifty million, forty thousand, four hundred two".