1531141 has 4 divisors (see below), whose sum is σ = 1534912. Its totient is φ = 1527372.

The previous prime is 1531129. The next prime is 1531147. The reversal of 1531141 is 1411351.

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: 1411351 = 127 ⋅11113.

It is a cyclic number.

It is not a de Polignac number, because 1531141 - 2¹¹ = 1529093 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531147) 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, 1191 + ... + 2116.

It is an arithmetic number, because the mean of its divisors is an integer number (383728).

2^1531141 is an apocalyptic number.

It is an amenable number.

1531141 is a deficient number, since it is larger than the sum of its proper divisors (3771).

1531141 is an equidigital number, since it uses as much as digits as its factorization.

1531141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770.

The product of its digits is 60, while the sum is 16.

The square root of 1531141 is about 1237.3928236417. The cubic root of 1531141 is about 115.2581723383.

Adding to 1531141 its reverse (1411351), we get a palindrome (2942492).

The spelling of 1531141 in words is "one million, five hundred thirty-one thousand, one hundred forty-one".