1243112356 has 12 divisors (see below), whose sum is σ = 2196568192. Its totient is φ = 615521448.

The previous prime is 1243112323. The next prime is 1243112357. The reversal of 1243112356 is 6532113421.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1243112357) 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, 1508220 + ... + 1509043.

Almost surely, 2^1243112356 is an apocalyptic number.

It is an amenable number.

1243112356 is a deficient number, since it is larger than the sum of its proper divisors (953455836).

1243112356 is a wasteful number, since it uses less digits than its factorization.

1243112356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017370 (or 3017368 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 1243112356 is about 35257.7985132368. The cubic root of 1243112356 is about 1075.2351693181.

Adding to 1243112356 its reverse (6532113421), we get a palindrome (7775225777).

The spelling of 1243112356 in words is "one billion, two hundred forty-three million, one hundred twelve thousand, three hundred fifty-six".