1043220431 has 4 divisors (see below), whose sum is σ = 1138058664. Its totient is φ = 948382200.

The previous prime is 1043220397. The next prime is 1043220433. The reversal of 1043220431 is 1340223401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1340223401 = 11 ⋅121838491.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1043220431 is a prime.

It is a super-2 number, since 2×1043220431² = 2176617735311651522, 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 (1043220433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47419100 + ... + 47419121.

It is an arithmetic number, because the mean of its divisors is an integer number (284514666).

Almost surely, 2^1043220431 is an apocalyptic number.

1043220431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1043220431 is a deficient number, since it is larger than the sum of its proper divisors (94838233).

1043220431 is an equidigital number, since it uses as much as digits as its factorization.

1043220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94838232.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1043220431 is about 32298.9230625419. The cubic root of 1043220431 is about 1014.2040986586.

Adding to 1043220431 its reverse (1340223401), we get a palindrome (2383443832).

The spelling of 1043220431 in words is "one billion, forty-three million, two hundred twenty thousand, four hundred thirty-one".