1053440231 has 4 divisors (see below), whose sum is σ = 1053510432. Its totient is φ = 1053370032.

The previous prime is 1053440203. The next prime is 1053440249. The reversal of 1053440231 is 1320443501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1053440231 - 2¹⁰ = 1053439207 is a prime.

It is a super-2 number, since 2×1053440231² = 2219472640578666722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1053440197 and 1053440206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053440251) 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, 2495 + ... + 45968.

It is an arithmetic number, because the mean of its divisors is an integer number (263377608).

Almost surely, 2^1053440231 is an apocalyptic number.

1053440231 is a deficient number, since it is larger than the sum of its proper divisors (70201).

1053440231 is an equidigital number, since it uses as much as digits as its factorization.

1053440231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70200.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1053440231 is about 32456.7439987439. The cubic root of 1053440231 is about 1017.5051905874.

Adding to 1053440231 its reverse (1320443501), we get a palindrome (2373883732).

The spelling of 1053440231 in words is "one billion, fifty-three million, four hundred forty thousand, two hundred thirty-one".