131402634365 has 8 divisors (see below), whose sum is σ = 157689925848. Its totient is φ = 105117597760.

The previous prime is 131402634343. The next prime is 131402634371. The reversal of 131402634365 is 563436204131.

It can be written as a sum of positive squares in 4 ways, for example, as 24158174041 + 107244460324 = 155429^2 + 327482^2 .

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

It is not a de Polignac number, because 131402634365 - 2¹² = 131402630269 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 432746 + ... + 670875.

It is an arithmetic number, because the mean of its divisors is an integer number (19711240731).

Almost surely, 2^131402634365 is an apocalyptic number.

It is an amenable number.

131402634365 is a deficient number, since it is larger than the sum of its proper divisors (26287291483).

131402634365 is a wasteful number, since it uses less digits than its factorization.

131402634365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127439.

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 131402634365 its reverse (563436204131), we get a palindrome (694838838496).

The spelling of 131402634365 in words is "one hundred thirty-one billion, four hundred two million, six hundred thirty-four thousand, three hundred sixty-five".