1234213517 has 2 divisors, whose sum is σ = 1234213518. Its totient is φ = 1234213516.

The previous prime is 1234213493. The next prime is 1234213531. The reversal of 1234213517 is 7153124321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1014995881 + 219217636 = 31859^2 + 14806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234213517 - 2¹² = 1234209421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1234213517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234216517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617106758 + 617106759.

It is an arithmetic number, because the mean of its divisors is an integer number (617106759).

Almost surely, 2^1234213517 is an apocalyptic number.

It is an amenable number.

1234213517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234213517 is an equidigital number, since it uses as much as digits as its factorization.

1234213517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 1234213517 is about 35131.3751082988. The cubic root of 1234213517 is about 1072.6633268070.

Adding to 1234213517 its reverse (7153124321), we get a palindrome (8387337838).

The spelling of 1234213517 in words is "one billion, two hundred thirty-four million, two hundred thirteen thousand, five hundred seventeen".