1020544231 has 4 divisors (see below), whose sum is σ = 1166336272. Its totient is φ = 874752192.

The previous prime is 1020544183. The next prime is 1020544253. The reversal of 1020544231 is 1324450201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1324450201 = 419 ⋅3160979.

It is a cyclic number.

It is not a de Polignac number, because 1020544231 - 2¹⁷ = 1020413159 is a prime.

It is a super-2 number, since 2×1020544231² = 2083021054854762722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020544331) 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, 72896010 + ... + 72896023.

It is an arithmetic number, because the mean of its divisors is an integer number (291584068).

Almost surely, 2^1020544231 is an apocalyptic number.

1020544231 is a deficient number, since it is larger than the sum of its proper divisors (145792041).

1020544231 is an equidigital number, since it uses as much as digits as its factorization.

1020544231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145792040.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1020544231 is about 31945.9579759318. The cubic root of 1020544231 is about 1006.8017088668.

Adding to 1020544231 its reverse (1324450201), we get a palindrome (2344994432).

The spelling of 1020544231 in words is "one billion, twenty million, five hundred forty-four thousand, two hundred thirty-one".