1343012261 has 2 divisors, whose sum is σ = 1343012262. Its totient is φ = 1343012260.

The previous prime is 1343012219. The next prime is 1343012267. The reversal of 1343012261 is 1622103431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1300684225 + 42328036 = 36065^2 + 6506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343012261 - 2³⁰ = 269270437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1343012267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671506130 + 671506131.

It is an arithmetic number, because the mean of its divisors is an integer number (671506131).

Almost surely, 2^1343012261 is an apocalyptic number.

It is an amenable number.

1343012261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343012261 is an equidigital number, since it uses as much as digits as its factorization.

1343012261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1343012261 is about 36647.1316885783. The cubic root of 1343012261 is about 1103.2992573719.

Adding to 1343012261 its reverse (1622103431), we get a palindrome (2965115692).

The spelling of 1343012261 in words is "one billion, three hundred forty-three million, twelve thousand, two hundred sixty-one".