131269281 has 32 divisors (see below), whose sum is σ = 208739328. Its totient is φ = 72325440.

The previous prime is 131269253. The next prime is 131269319. The reversal of 131269281 is 182962131.

It is not a de Polignac number, because 131269281 - 2⁹ = 131268769 is a prime.

It is a super-2 number, since 2×131269281² = 34463248268513922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (131269781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26460 + ... + 31026.

It is an arithmetic number, because the mean of its divisors is an integer number (6523104).

Almost surely, 2^131269281 is an apocalyptic number.

131269281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131269281 is a deficient number, since it is larger than the sum of its proper divisors (77470047).

131269281 is a wasteful number, since it uses less digits than its factorization.

131269281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4661.

The product of its digits is 5184, while the sum is 33.

The square root of 131269281 is about 11457.2806983158. The cubic root of 131269281 is about 508.2230624438.

The spelling of 131269281 in words is "one hundred thirty-one million, two hundred sixty-nine thousand, two hundred eighty-one".