1131471 has 18 divisors (see below), whose sum is σ = 1798160. Its totient is φ = 685080.

The previous prime is 1131467. The next prime is 1131479. The reversal of 1131471 is 1741311.

It is not a de Polignac number, because 1131471 - 2² = 1131467 is a prime.

It is a super-3 number, since 3×1131471³ = 4345617894912000333, which contains 333 as substring.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131479) 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 17 ways as a sum of consecutive naturals, for example, 570 + ... + 1608.

2^1131471 is an apocalyptic number.

1131471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131471 is a deficient number, since it is larger than the sum of its proper divisors (666689).

1131471 is a wasteful number, since it uses less digits than its factorization.

1131471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 1053 counting only the distinct ones).

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

The square root of 1131471 is about 1063.7062564449. The cubic root of 1131471 is about 104.2032207354.

Adding to 1131471 its reverse (1741311), we get a palindrome (2872782).

The spelling of 1131471 in words is "one million, one hundred thirty-one thousand, four hundred seventy-one".