131215967 has 6 divisors (see below), whose sum is σ = 133043472. Its totient is φ = 129413232.

The previous prime is 131215961. The next prime is 131216021. The reversal of 131215967 is 769512131.

It is not a de Polignac number, because 131215967 - 2¹⁴ = 131199583 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 (131215961) 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, 6983 + ... + 17640.

It is an arithmetic number, because the mean of its divisors is an integer number (22173912).

Almost surely, 2^131215967 is an apocalyptic number.

131215967 is a deficient number, since it is larger than the sum of its proper divisors (1827505).

131215967 is an frugal number, since it uses more digits than its factorization.

131215967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24769 (or 24696 counting only the distinct ones).

The product of its digits is 11340, while the sum is 35.

The square root of 131215967 is about 11454.9538191998. The cubic root of 131215967 is about 508.1542495091.

The spelling of 131215967 in words is "one hundred thirty-one million, two hundred fifteen thousand, nine hundred sixty-seven".