1345442311 has 4 divisors (see below), whose sum is σ = 1358763624. Its totient is φ = 1332121000.

The previous prime is 1345442249. The next prime is 1345442317. The reversal of 1345442311 is 1132445431.

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 1345442311 - 2¹⁵ = 1345409543 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 1345442311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345442317) 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, 6660505 + ... + 6660706.

It is an arithmetic number, because the mean of its divisors is an integer number (339690906).

Almost surely, 2^1345442311 is an apocalyptic number.

1345442311 is a deficient number, since it is larger than the sum of its proper divisors (13321313).

1345442311 is a wasteful number, since it uses less digits than its factorization.

1345442311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13321312.

The product of its digits is 5760, while the sum is 28.

The square root of 1345442311 is about 36680.2714139359. The cubic root of 1345442311 is about 1103.9642939753.

Adding to 1345442311 its reverse (1132445431), we get a palindrome (2477887742).

It can be divided in two parts, 134 and 5442311, that added together give a palindrome (5442445).

The spelling of 1345442311 in words is "one billion, three hundred forty-five million, four hundred forty-two thousand, three hundred eleven".