1043240431 has 2 divisors, whose sum is σ = 1043240432. Its totient is φ = 1043240430.

The previous prime is 1043240423. The next prime is 1043240507. The reversal of 1043240431 is 1340423401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1043240431 - 2³ = 1043240423 is a prime.

It is a super-2 number, since 2×1043240431² = 2176701193746131522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043247431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521620215 + 521620216.

It is an arithmetic number, because the mean of its divisors is an integer number (521620216).

Almost surely, 2^1043240431 is an apocalyptic number.

1043240431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043240431 is an equidigital number, since it uses as much as digits as its factorization.

1043240431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1043240431 is about 32299.2326689041. The cubic root of 1043240431 is about 1014.2105798559.

Adding to 1043240431 its reverse (1340423401), we get a palindrome (2383663832).

The spelling of 1043240431 in words is "one billion, forty-three million, two hundred forty thousand, four hundred thirty-one".