131989541951 has 8 divisors (see below), whose sum is σ = 145829877984. Its totient is φ = 118824344320.

The previous prime is 131989541939. The next prime is 131989541953. The reversal of 131989541951 is 159145989131.

It is a happy number.

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

It is not a de Polignac number, because 131989541951 - 2¹⁰ = 131989540927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131989541953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168784190 + ... + 168784971.

It is an arithmetic number, because the mean of its divisors is an integer number (18228734748).

Almost surely, 2^131989541951 is an apocalyptic number.

131989541951 is a deficient number, since it is larger than the sum of its proper divisors (13840336033).

131989541951 is a wasteful number, since it uses less digits than its factorization.

131989541951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337569201.

The product of its digits is 1749600, while the sum is 56.

The spelling of 131989541951 in words is "one hundred thirty-one billion, nine hundred eighty-nine million, five hundred forty-one thousand, nine hundred fifty-one".