1023540231 has 8 divisors (see below), whose sum is σ = 1559680384. Its totient is φ = 584880120.

The previous prime is 1023540229. The next prime is 1023540247. The reversal of 1023540231 is 1320453201.

1023540231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1023540231 - 2¹ = 1023540229 is a prime.

It is a super-2 number, since 2×1023540231² = 2095269208951066722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 48740011 = 1023540231 / (1 + 0 + 2 + 3 + 5 + 4 + 0 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023540198 and 1023540207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023540211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24369985 + ... + 24370026.

It is an arithmetic number, because the mean of its divisors is an integer number (194960048).

Almost surely, 2^1023540231 is an apocalyptic number.

1023540231 is a deficient number, since it is larger than the sum of its proper divisors (536140153).

1023540231 is an equidigital number, since it uses as much as digits as its factorization.

1023540231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48740021.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1023540231 is about 31992.8153028145. The cubic root of 1023540231 is about 1007.7859650827.

Adding to 1023540231 its reverse (1320453201), we get a palindrome (2343993432).

The spelling of 1023540231 in words is "one billion, twenty-three million, five hundred forty thousand, two hundred thirty-one".