1213081293 has 8 divisors (see below), whose sum is σ = 1618269408. Its totient is φ = 808307024.

The previous prime is 1213081283. The next prime is 1213081357. The reversal of 1213081293 is 3921803121.

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 1213081293 - 2⁶ = 1213081229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213081293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213081283) 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, 96555 + ... + 108392.

It is an arithmetic number, because the mean of its divisors is an integer number (202283676).

Almost surely, 2^1213081293 is an apocalyptic number.

It is an amenable number.

1213081293 is a deficient number, since it is larger than the sum of its proper divisors (405188115).

1213081293 is a wasteful number, since it uses less digits than its factorization.

1213081293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206923.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1213081293 is about 34829.3165738290. The cubic root of 1213081293 is about 1066.5059969696.

The spelling of 1213081293 in words is "one billion, two hundred thirteen million, eighty-one thousand, two hundred ninety-three".