1343131091 has 4 divisors (see below), whose sum is σ = 1343205552. Its totient is φ = 1343056632.

The previous prime is 1343131081. The next prime is 1343131093. The reversal of 1343131091 is 1901313431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1343131091 is a prime.

It is a super-2 number, since 2×1343131091² = 3608002255221700562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1343131091.

It is not an unprimeable number, because it can be changed into a prime (1343131093) 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, 8786 + ... + 52568.

It is an arithmetic number, because the mean of its divisors is an integer number (335801388).

Almost surely, 2^1343131091 is an apocalyptic number.

1343131091 is a deficient number, since it is larger than the sum of its proper divisors (74461).

1343131091 is an equidigital number, since it uses as much as digits as its factorization.

1343131091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74460.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1343131091 is about 36648.7529255772. The cubic root of 1343131091 is about 1103.3317964603.

The spelling of 1343131091 in words is "one billion, three hundred forty-three million, one hundred thirty-one thousand, ninety-one".