1344151997 has 4 divisors (see below), whose sum is σ = 1344382716. Its totient is φ = 1343921280.

The previous prime is 1344151987. The next prime is 1344151999. The reversal of 1344151997 is 7991514431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115369081 + 1228782916 = 10741^2 + 35054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344151997 - 2⁶ = 1344151933 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 (1344151999) 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, 106388 + ... + 118349.

It is an arithmetic number, because the mean of its divisors is an integer number (336095679).

Almost surely, 2^1344151997 is an apocalyptic number.

It is an amenable number.

1344151997 is a deficient number, since it is larger than the sum of its proper divisors (230719).

1344151997 is an equidigital number, since it uses as much as digits as its factorization.

1344151997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230718.

The product of its digits is 136080, while the sum is 44.

The square root of 1344151997 is about 36662.6785300802. The cubic root of 1344151997 is about 1103.6112709880.

The spelling of 1344151997 in words is "one billion, three hundred forty-four million, one hundred fifty-one thousand, nine hundred ninety-seven".