1043442431 has 4 divisors (see below), whose sum is σ = 1045350552. Its totient is φ = 1041534312.

The previous prime is 1043442401. The next prime is 1043442443. The reversal of 1043442431 is 1342443401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1043442431 - 2²² = 1039248127 is a prime.

It is a super-2 number, since 2×1043442431² = 2177544213622379522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1043442431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043442401) 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, 953240 + ... + 954333.

It is an arithmetic number, because the mean of its divisors is an integer number (261337638).

Almost surely, 2^1043442431 is an apocalyptic number.

1043442431 is a deficient number, since it is larger than the sum of its proper divisors (1908121).

1043442431 is an equidigital number, since it uses as much as digits as its factorization.

1043442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908120.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1043442431 is about 32302.3595268209. The cubic root of 1043442431 is about 1014.2760353059.

Adding to 1043442431 its reverse (1342443401), we get a palindrome (2385885832).

The spelling of 1043442431 in words is "one billion, forty-three million, four hundred forty-two thousand, four hundred thirty-one".