1243162361 has 16 divisors (see below), whose sum is σ = 1452971520. Its totient is φ = 1041469440.

The previous prime is 1243162309. The next prime is 1243162363. The reversal of 1243162361 is 1632613421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243162361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243162363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287705 + ... + 291993.

It is an arithmetic number, because the mean of its divisors is an integer number (90810720).

Almost surely, 2^1243162361 is an apocalyptic number.

It is an amenable number.

1243162361 is a deficient number, since it is larger than the sum of its proper divisors (209809159).

1243162361 is an equidigital number, since it uses as much as digits as its factorization.

1243162361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5224.

The product of its digits is 5184, while the sum is 29.

The square root of 1243162361 is about 35258.5076400009. The cubic root of 1243162361 is about 1075.2495864686.

Adding to 1243162361 its reverse (1632613421), we get a palindrome (2875775782).

The spelling of 1243162361 in words is "one billion, two hundred forty-three million, one hundred sixty-two thousand, three hundred sixty-one".