1343693551 has 2 divisors, whose sum is σ = 1343693552. Its totient is φ = 1343693550.

The previous prime is 1343693537. The next prime is 1343693587. The reversal of 1343693551 is 1553963431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1343693551 - 2⁷ = 1343693423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1343693251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671846775 + 671846776.

It is an arithmetic number, because the mean of its divisors is an integer number (671846776).

Almost surely, 2^1343693551 is an apocalyptic number.

1343693551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343693551 is an equidigital number, since it uses as much as digits as its factorization.

1343693551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 40.

The square root of 1343693551 is about 36656.4257804822. The cubic root of 1343693551 is about 1103.4857882288.

The spelling of 1343693551 in words is "one billion, three hundred forty-three million, six hundred ninety-three thousand, five hundred fifty-one".