1343783971 has 12 divisors (see below), whose sum is σ = 1365585480. Its totient is φ = 1322304000.

The previous prime is 1343783963. The next prime is 1343783999. The reversal of 1343783971 is 1793873431.

It is not a de Polignac number, because 1343783971 - 2³ = 1343783963 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 (1343784971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2361375 + ... + 2361943.

It is an arithmetic number, because the mean of its divisors is an integer number (113798790).

Almost surely, 2^1343783971 is an apocalyptic number.

1343783971 is a deficient number, since it is larger than the sum of its proper divisors (21801509).

1343783971 is an frugal number, since it uses more digits than its factorization.

1343783971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014 (or 917 counting only the distinct ones).

The product of its digits is 381024, while the sum is 46.

The square root of 1343783971 is about 36657.6591042036. The cubic root of 1343783971 is about 1103.5105396430.

The spelling of 1343783971 in words is "one billion, three hundred forty-three million, seven hundred eighty-three thousand, nine hundred seventy-one".