1343637131 has 2 divisors, whose sum is σ = 1343637132. Its totient is φ = 1343637130.

The previous prime is 1343637101. The next prime is 1343637133. The reversal of 1343637131 is 1317363431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1343637131 is a prime.

It is a super-2 number, since 2×1343637131² = 3610721479603822322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1343637133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1343637133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671818565 + 671818566.

It is an arithmetic number, because the mean of its divisors is an integer number (671818566).

Almost surely, 2^1343637131 is an apocalyptic number.

1343637131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343637131 is an equidigital number, since it uses as much as digits as its factorization.

1343637131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 32.

The square root of 1343637131 is about 36655.6561938263. The cubic root of 1343637131 is about 1103.4703433531.

The spelling of 1343637131 in words is "one billion, three hundred forty-three million, six hundred thirty-seven thousand, one hundred thirty-one".