1213243093 has 8 divisors (see below), whose sum is σ = 1223373312. Its totient is φ = 1203131616.

The previous prime is 1213243049. The next prime is 1213243127. The reversal of 1213243093 is 3903423121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213243093 - 2⁹ = 1213242581 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 (1213243693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144846 + ... + 152992.

It is an arithmetic number, because the mean of its divisors is an integer number (152921664).

Almost surely, 2^1213243093 is an apocalyptic number.

It is an amenable number.

1213243093 is a deficient number, since it is larger than the sum of its proper divisors (10130219).

1213243093 is a wasteful number, since it uses less digits than its factorization.

1213243093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1213243093 is about 34831.6392522660. The cubic root of 1213243093 is about 1066.5534114888.

It can be divided in two parts, 12132 and 43093, that added together give a square (55225 = 235²).

The spelling of 1213243093 in words is "one billion, two hundred thirteen million, two hundred forty-three thousand, ninety-three".