1344402331 has 4 divisors (see below), whose sum is σ = 1344523752. Its totient is φ = 1344280912.

The previous prime is 1344402287. The next prime is 1344402391. The reversal of 1344402331 is 1332044431.

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

It is a cyclic number.

It is not a de Polignac number, because 1344402331 - 2¹⁵ = 1344369563 is a prime.

It is a super-2 number, since 2×1344402331² = 3614835255196467122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1344402296 and 1344402305.

It is not an unprimeable number, because it can be changed into a prime (1344402391) 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, 42226 + ... + 66871.

It is an arithmetic number, because the mean of its divisors is an integer number (336130938).

Almost surely, 2^1344402331 is an apocalyptic number.

1344402331 is a deficient number, since it is larger than the sum of its proper divisors (121421).

1344402331 is a wasteful number, since it uses less digits than its factorization.

1344402331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121420.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1344402331 is about 36666.0923879270. The cubic root of 1344402331 is about 1103.6797786854.

Adding to 1344402331 its reverse (1332044431), we get a palindrome (2676446762).

The spelling of 1344402331 in words is "one billion, three hundred forty-four million, four hundred two thousand, three hundred thirty-one".