1311654343 has 4 divisors (see below), whose sum is σ = 1316289448. Its totient is φ = 1307019240.

The previous prime is 1311654313. The next prime is 1311654347. The reversal of 1311654343 is 3434561131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3434561131 = 241 ⋅14251291.

It is a cyclic number.

It is not a de Polignac number, because 1311654343 - 2¹³ = 1311646151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311654347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317128 + ... + 2317693.

It is an arithmetic number, because the mean of its divisors is an integer number (329072362).

Almost surely, 2^1311654343 is an apocalyptic number.

1311654343 is a deficient number, since it is larger than the sum of its proper divisors (4635105).

1311654343 is an equidigital number, since it uses as much as digits as its factorization.

1311654343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4635104.

The product of its digits is 12960, while the sum is 31.

The square root of 1311654343 is about 36216.7688094893. The cubic root of 1311654343 is about 1094.6445870851.

The spelling of 1311654343 in words is "one billion, three hundred eleven million, six hundred fifty-four thousand, three hundred forty-three".