1343666831 has 32 divisors (see below), whose sum is σ = 1581672960. Its totient is φ = 1131064704.

The previous prime is 1343666813. The next prime is 1343666851. The reversal of 1343666831 is 1386663431.

It is a cyclic number.

It is not a de Polignac number, because 1343666831 - 2¹⁴ = 1343650447 is a prime.

It is a super-2 number, since 2×1343666831² = 3610881105459165122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343666851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 718760 + ... + 720626.

It is an arithmetic number, because the mean of its divisors is an integer number (49427280).

Almost surely, 2^1343666831 is an apocalyptic number.

1343666831 is a deficient number, since it is larger than the sum of its proper divisors (238006129).

1343666831 is a wasteful number, since it uses less digits than its factorization.

1343666831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015.

The product of its digits is 186624, while the sum is 41.

The square root of 1343666831 is about 36656.0613132399. The cubic root of 1343666831 is about 1103.4784737297.

The spelling of 1343666831 in words is "one billion, three hundred forty-three million, six hundred sixty-six thousand, eight hundred thirty-one".