1201231313 has 2 divisors, whose sum is σ = 1201231314. Its totient is φ = 1201231312.

The previous prime is 1201231253. The next prime is 1201231349. The reversal of 1201231313 is 3131321021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1178411584 + 22819729 = 34328^2 + 4777^2 .

It is an emirp because it is prime and its reverse (3131321021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201231313 - 2⁶ = 1201231249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201231291 and 1201231300.

It is not a weakly prime, because it can be changed into another prime (1201231013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600615656 + 600615657.

It is an arithmetic number, because the mean of its divisors is an integer number (600615657).

Almost surely, 2^1201231313 is an apocalyptic number.

It is an amenable number.

1201231313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201231313 is an equidigital number, since it uses as much as digits as its factorization.

1201231313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1201231313 is about 34658.7840669577. The cubic root of 1201231313 is about 1063.0219075241.

Adding to 1201231313 its reverse (3131321021), we get a palindrome (4332552334).

The spelling of 1201231313 in words is "one billion, two hundred one million, two hundred thirty-one thousand, three hundred thirteen".