1213258108 has 12 divisors (see below), whose sum is σ = 2248096032. Its totient is φ = 570944960.

The previous prime is 1213258099. The next prime is 1213258117. The reversal of 1213258108 is 8018523121.

It is an interprime number because it is at equal distance from previous prime (1213258099) and next prime (1213258117).

It is a self number, because there is not a number n which added to its sum of digits gives 1213258108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8920948 + ... + 8921083.

It is an arithmetic number, because the mean of its divisors is an integer number (187341336).

Almost surely, 2^1213258108 is an apocalyptic number.

It is an amenable number.

1213258108 is a deficient number, since it is larger than the sum of its proper divisors (1034837924).

1213258108 is a wasteful number, since it uses less digits than its factorization.

1213258108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17842052 (or 17842050 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 1213258108 is about 34831.8547883974. The cubic root of 1213258108 is about 1066.5578113307.

The spelling of 1213258108 in words is "one billion, two hundred thirteen million, two hundred fifty-eight thousand, one hundred eight".