1226131 has 4 divisors (see below), whose sum is σ = 1229272. Its totient is φ = 1222992.

The previous prime is 1226117. The next prime is 1226179. The reversal of 1226131 is 1316221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1226131 - 2¹⁵ = 1193363 is a prime.

It is a super-2 number, since 2×1226131² = 3006794458322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885 + ... + 1798.

It is an arithmetic number, because the mean of its divisors is an integer number (307318).

2^1226131 is an apocalyptic number.

1226131 is a deficient number, since it is larger than the sum of its proper divisors (3141).

1226131 is an equidigital number, since it uses as much as digits as its factorization.

1226131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140.

The product of its digits is 72, while the sum is 16.

The square root of 1226131 is about 1107.3079969006. The cubic root of 1226131 is about 107.0316673381.

The spelling of 1226131 in words is "one million, two hundred twenty-six thousand, one hundred thirty-one".