1040531231 has 2 divisors, whose sum is σ = 1040531232. Its totient is φ = 1040531230.

The previous prime is 1040531207. The next prime is 1040531249. The reversal of 1040531231 is 1321350401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1040531231 - 2¹⁴ = 1040514847 is a prime.

It is a super-2 number, since 2×1040531231² = 2165410485372750722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040533231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520265615 + 520265616.

It is an arithmetic number, because the mean of its divisors is an integer number (520265616).

Almost surely, 2^1040531231 is an apocalyptic number.

1040531231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040531231 is an equidigital number, since it uses as much as digits as its factorization.

1040531231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1040531231 is about 32257.2663286894. The cubic root of 1040531231 is about 1013.3318814061.

Adding to 1040531231 its reverse (1321350401), we get a palindrome (2361881632).

The spelling of 1040531231 in words is "one billion, forty million, five hundred thirty-one thousand, two hundred thirty-one".