1121053531 has 4 divisors (see below), whose sum is σ = 1207288432. Its totient is φ = 1034818632.

The previous prime is 1121053499. The next prime is 1121053537. The reversal of 1121053531 is 1353501211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121053531 - 2⁵ = 1121053499 is a prime.

It is a super-2 number, since 2×1121053531² = 2513522038735135922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121053537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43117431 + ... + 43117456.

It is an arithmetic number, because the mean of its divisors is an integer number (301822108).

Almost surely, 2^1121053531 is an apocalyptic number.

1121053531 is a deficient number, since it is larger than the sum of its proper divisors (86234901).

1121053531 is an equidigital number, since it uses as much as digits as its factorization.

1121053531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86234900.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1121053531 is about 33482.1374915043. The cubic root of 1121053531 is about 1038.8243405568.

Adding to 1121053531 its reverse (1353501211), we get a palindrome (2474554742).

The spelling of 1121053531 in words is "one billion, one hundred twenty-one million, fifty-three thousand, five hundred thirty-one".