11273731 has 4 divisors (see below), whose sum is σ = 12884272. Its totient is φ = 9663192.

The previous prime is 11273701. The next prime is 11273741. The reversal of 11273731 is 13737211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13737211 = 67 ⋅205033.

It is not a de Polignac number, because 11273731 - 2¹¹ = 11271683 is a prime.

It is a super-2 number, since 2×11273731² = 254194021320722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11273696 and 11273705.

It is not an unprimeable number, because it can be changed into a prime (11273701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805260 + ... + 805273.

It is an arithmetic number, because the mean of its divisors is an integer number (3221068).

Almost surely, 2^11273731 is an apocalyptic number.

11273731 is a deficient number, since it is larger than the sum of its proper divisors (1610541).

11273731 is an equidigital number, since it uses as much as digits as its factorization.

11273731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610540.

The product of its digits is 882, while the sum is 25.

The square root of 11273731 is about 3357.6377112488. The cubic root of 11273731 is about 224.2276795883.

The spelling of 11273731 in words is "eleven million, two hundred seventy-three thousand, seven hundred thirty-one".