1213343429 has 2 divisors, whose sum is σ = 1213343430. Its totient is φ = 1213343428.

The previous prime is 1213343407. The next prime is 1213343459. The reversal of 1213343429 is 9243433121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1195084900 + 18258529 = 34570^2 + 4273^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213343429 - 2¹⁶ = 1213277893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213343395 and 1213343404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213343459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606671714 + 606671715.

It is an arithmetic number, because the mean of its divisors is an integer number (606671715).

Almost surely, 2^1213343429 is an apocalyptic number.

It is an amenable number.

1213343429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213343429 is an equidigital number, since it uses as much as digits as its factorization.

1213343429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 1213343429 is about 34833.0795222013. The cubic root of 1213343429 is about 1066.5828122340.

The spelling of 1213343429 in words is "one billion, two hundred thirteen million, three hundred forty-three thousand, four hundred twenty-nine".