266985131 has 12 divisors (see below), whose sum is σ = 322033392. Its totient is φ = 216797904.

The previous prime is 266985101. The next prime is 266985143. The reversal of 266985131 is 131589662.

It is not a de Polignac number, because 266985131 - 2¹⁴ = 266968747 is a prime.

It is a super-2 number, since 2×266985131² = 142562120350174322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266985101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50300 + ... + 55353.

It is an arithmetic number, because the mean of its divisors is an integer number (26836116).

Almost surely, 2^266985131 is an apocalyptic number.

266985131 is a deficient number, since it is larger than the sum of its proper divisors (55048261).

266985131 is a wasteful number, since it uses less digits than its factorization.

266985131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105698 (or 105679 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 266985131 is about 16339.6796480225. The cubic root of 266985131 is about 643.9157160829.

The spelling of 266985131 in words is "two hundred sixty-six million, nine hundred eighty-five thousand, one hundred thirty-one".