1213275337 has 2 divisors, whose sum is σ = 1213275338. Its totient is φ = 1213275336.

The previous prime is 1213275313. The next prime is 1213275439. The reversal of 1213275337 is 7335723121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212153856 + 1121481 = 34816^2 + 1059^2 .

It is an emirp because it is prime and its reverse (7335723121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213275337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213275137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606637668 + 606637669.

It is an arithmetic number, because the mean of its divisors is an integer number (606637669).

Almost surely, 2^1213275337 is an apocalyptic number.

It is an amenable number.

1213275337 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213275337 is an equidigital number, since it uses as much as digits as its factorization.

1213275337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 34.

The square root of 1213275337 is about 34832.1021042371. The cubic root of 1213275337 is about 1066.5628598958.

Adding to 1213275337 its reverse (7335723121), we get a palindrome (8548998458).

The spelling of 1213275337 in words is "one billion, two hundred thirteen million, two hundred seventy-five thousand, three hundred thirty-seven".