1356212279 has 2 divisors, whose sum is σ = 1356212280. Its totient is φ = 1356212278.

The previous prime is 1356212269. The next prime is 1356212311. The reversal of 1356212279 is 9722126531.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356212279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356212269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678106139 + 678106140.

It is an arithmetic number, because the mean of its divisors is an integer number (678106140).

Almost surely, 2^1356212279 is an apocalyptic number.

1356212279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356212279 is an equidigital number, since it uses as much as digits as its factorization.

1356212279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 1356212279 is about 36826.7875194131. The cubic root of 1356212279 is about 1106.9021322503.

The spelling of 1356212279 in words is "one billion, three hundred fifty-six million, two hundred twelve thousand, two hundred seventy-nine".