1343240149 has 4 divisors (see below), whose sum is σ = 1374478336. Its totient is φ = 1312001964.

The previous prime is 1343240117. The next prime is 1343240179. The reversal of 1343240149 is 9410423431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9410423431 = 4283 ⋅2197157.

It is a cyclic number.

It is not a de Polignac number, because 1343240149 - 2⁵ = 1343240117 is a prime.

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 1343240149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343240179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15619029 + ... + 15619114.

It is an arithmetic number, because the mean of its divisors is an integer number (343619584).

Almost surely, 2^1343240149 is an apocalyptic number.

It is an amenable number.

1343240149 is a deficient number, since it is larger than the sum of its proper divisors (31238187).

1343240149 is an equidigital number, since it uses as much as digits as its factorization.

1343240149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31238186.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1343240149 is about 36650.2407768353. The cubic root of 1343240149 is about 1103.3616580038.

The spelling of 1343240149 in words is "one billion, three hundred forty-three million, two hundred forty thousand, one hundred forty-nine".