1213236061 has 2 divisors, whose sum is σ = 1213236062. Its totient is φ = 1213236060.

The previous prime is 1213236053. The next prime is 1213236071. The reversal of 1213236061 is 1606323121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1141155961 + 72080100 = 33781^2 + 8490^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213236061 - 2³ = 1213236053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213236071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606618030 + 606618031.

It is an arithmetic number, because the mean of its divisors is an integer number (606618031).

Almost surely, 2^1213236061 is an apocalyptic number.

It is an amenable number.

1213236061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213236061 is an equidigital number, since it uses as much as digits as its factorization.

1213236061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1213236061 is about 34831.5383094115. The cubic root of 1213236061 is about 1066.5513508910.

Adding to 1213236061 its reverse (1606323121), we get a palindrome (2819559182).

The spelling of 1213236061 in words is "one billion, two hundred thirteen million, two hundred thirty-six thousand, sixty-one".