1213056073 has 2 divisors, whose sum is σ = 1213056074. Its totient is φ = 1213056072.

The previous prime is 1213056059. The next prime is 1213056149. The reversal of 1213056073 is 3706503121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 612414009 + 600642064 = 24747^2 + 24508^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213056073 - 2¹⁷ = 1212925001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213056043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606528036 + 606528037.

It is an arithmetic number, because the mean of its divisors is an integer number (606528037).

Almost surely, 2^1213056073 is an apocalyptic number.

It is an amenable number.

1213056073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213056073 is an equidigital number, since it uses as much as digits as its factorization.

1213056073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 1213056073 is about 34828.9545206284. The cubic root of 1213056073 is about 1066.4986060201.

Adding to 1213056073 its reverse (3706503121), we get a palindrome (4919559194).

The spelling of 1213056073 in words is "one billion, two hundred thirteen million, fifty-six thousand, seventy-three".