1343447137 has 2 divisors, whose sum is σ = 1343447138. Its totient is φ = 1343447136.

The previous prime is 1343447113. The next prime is 1343447159. The reversal of 1343447137 is 7317443431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 940280896 + 403166241 = 30664^2 + 20079^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343447137 - 2⁷ = 1343447009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1343447096 and 1343447105.

It is not a weakly prime, because it can be changed into another prime (1343447177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671723568 + 671723569.

It is an arithmetic number, because the mean of its divisors is an integer number (671723569).

Almost surely, 2^1343447137 is an apocalyptic number.

It is an amenable number.

1343447137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343447137 is an equidigital number, since it uses as much as digits as its factorization.

1343447137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 37.

The square root of 1343447137 is about 36653.0644967102. The cubic root of 1343447137 is about 1103.4183296504.

The spelling of 1343447137 in words is "one billion, three hundred forty-three million, four hundred forty-seven thousand, one hundred thirty-seven".