11071431 has 16 divisors (see below), whose sum is σ = 18745600. Its totient is φ = 6326424.

The previous prime is 11071421. The next prime is 11071451. The reversal of 11071431 is 13417011.

It is not a de Polignac number, because 11071431 - 2¹⁷ = 10940359 is a prime.

It is a super-2 number, since 2×11071431² = 245153168775522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11071421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29101 + ... + 29478.

It is an arithmetic number, because the mean of its divisors is an integer number (1171600).

Almost surely, 2^11071431 is an apocalyptic number.

11071431 is a deficient number, since it is larger than the sum of its proper divisors (7674169).

11071431 is an equidigital number, since it uses as much as digits as its factorization.

11071431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58595 (or 58589 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 11071431 is about 3327.3759931814. The cubic root of 11071431 is about 222.8783681179.

Adding to 11071431 its reverse (13417011), we get a palindrome (24488442).

The spelling of 11071431 in words is "eleven million, seventy-one thousand, four hundred thirty-one".