1131461 has 4 divisors (see below), whose sum is σ = 1134912. Its totient is φ = 1128012.

The previous prime is 1131451. The next prime is 1131463. The reversal of 1131461 is 1641311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1641311 = 7 ⋅234473.

It is a cyclic number.

It is not a de Polignac number, because 1131461 - 2⁶ = 1131397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131463) 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, 1175 + ... + 1908.

It is an arithmetic number, because the mean of its divisors is an integer number (283728).

2^1131461 is an apocalyptic number.

It is an amenable number.

1131461 is a deficient number, since it is larger than the sum of its proper divisors (3451).

1131461 is an equidigital number, since it uses as much as digits as its factorization.

1131461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450.

The product of its digits is 72, while the sum is 17.

The square root of 1131461 is about 1063.7015558887. The cubic root of 1131461 is about 104.2029137500.

Adding to 1131461 its reverse (1641311), we get a palindrome (2772772).

The spelling of 1131461 in words is "one million, one hundred thirty-one thousand, four hundred sixty-one".