1213059983 has 4 divisors (see below), whose sum is σ = 1216935888. Its totient is φ = 1209184080.

The previous prime is 1213059979. The next prime is 1213060003. The reversal of 1213059983 is 3899503121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3899503121 = 79 ⋅49360799.

It is a cyclic number.

It is not a de Polignac number, because 1213059983 - 2² = 1213059979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213059983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213059383) 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, 1937483 + ... + 1938108.

It is an arithmetic number, because the mean of its divisors is an integer number (304233972).

Almost surely, 2^1213059983 is an apocalyptic number.

1213059983 is a deficient number, since it is larger than the sum of its proper divisors (3875905).

1213059983 is an equidigital number, since it uses as much as digits as its factorization.

1213059983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875904.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 1213059983 is about 34829.0106520412. The cubic root of 1213059983 is about 1066.4997518877.

The spelling of 1213059983 in words is "one billion, two hundred thirteen million, fifty-nine thousand, nine hundred eighty-three".