1243331141 has 6 divisors (see below), whose sum is σ = 1346329170. Its totient is φ = 1147690128.

The previous prime is 1243331137. The next prime is 1243331147. The reversal of 1243331141 is 1411333421.

It can be written as a sum of positive squares in 3 ways, for example, as 1050625 + 1242280516 = 1025^2 + 35246^2 .

It is not a de Polignac number, because 1243331141 - 2² = 1243331137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243331147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3678326 + ... + 3678663.

It is an arithmetic number, because the mean of its divisors is an integer number (224388195).

Almost surely, 2^1243331141 is an apocalyptic number.

It is an amenable number.

1243331141 is a deficient number, since it is larger than the sum of its proper divisors (102998029).

1243331141 is an equidigital number, since it uses as much as digits as its factorization.

1243331141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7357015 (or 7357002 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 1243331141 is about 35260.9010236551. The cubic root of 1243331141 is about 1075.2982452811.

Adding to 1243331141 its reverse (1411333421), we get a palindrome (2654664562).

The spelling of 1243331141 in words is "one billion, two hundred forty-three million, three hundred thirty-one thousand, one hundred forty-one".