1212012313 has 2 divisors, whose sum is σ = 1212012314. Its totient is φ = 1212012312.

The previous prime is 1212012289. The next prime is 1212012343. The reversal of 1212012313 is 3132102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708997129 + 503015184 = 26627^2 + 22428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212012313 - 2¹³ = 1212004121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212012343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606006156 + 606006157.

It is an arithmetic number, because the mean of its divisors is an integer number (606006157).

Almost surely, 2^1212012313 is an apocalyptic number.

It is an amenable number.

1212012313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212012313 is an equidigital number, since it uses as much as digits as its factorization.

1212012313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1212012313 is about 34813.9672114512. The cubic root of 1212012313 is about 1066.1926328027.

Adding to 1212012313 its reverse (3132102121), we get a palindrome (4344114434).

The spelling of 1212012313 in words is "one billion, two hundred twelve million, twelve thousand, three hundred thirteen".