131531736669 has 16 divisors (see below), whose sum is σ = 177052661568. Its totient is φ = 86849670272.

The previous prime is 131531736599. The next prime is 131531736727. The reversal of 131531736669 is 966637135131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131531736669 - 2¹³ = 131531728477 is a prime.

It is a super-2 number, since 2×131531736669² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131531736769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1543279 + ... + 1626275.

It is an arithmetic number, because the mean of its divisors is an integer number (11065791348).

Almost surely, 2^131531736669 is an apocalyptic number.

It is an amenable number.

131531736669 is a deficient number, since it is larger than the sum of its proper divisors (45520924899).

131531736669 is a wasteful number, since it uses less digits than its factorization.

131531736669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88044.

The product of its digits is 1837080, while the sum is 51.

The spelling of 131531736669 in words is "one hundred thirty-one billion, five hundred thirty-one million, seven hundred thirty-six thousand, six hundred sixty-nine".