131217959 has 6 divisors (see below), whose sum is σ = 133210224. Its totient is φ = 129255060.

The previous prime is 131217949. The next prime is 131217979. The reversal of 131217959 is 959712131.

It is not a de Polignac number, because 131217959 - 2¹⁶ = 131152423 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 (131217949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10127 + ... + 19104.

It is an arithmetic number, because the mean of its divisors is an integer number (22201704).

Almost surely, 2^131217959 is an apocalyptic number.

131217959 is a deficient number, since it is larger than the sum of its proper divisors (1992265).

131217959 is an frugal number, since it uses more digits than its factorization.

131217959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29365 (or 29298 counting only the distinct ones).

The product of its digits is 17010, while the sum is 38.

The square root of 131217959 is about 11455.0407681509. The cubic root of 131217959 is about 508.1568209394.

The spelling of 131217959 in words is "one hundred thirty-one million, two hundred seventeen thousand, nine hundred fifty-nine".