1345442211 has 32 divisors (see below), whose sum is σ = 2117755200. Its totient is φ = 842607360.

The previous prime is 1345442207. The next prime is 1345442221. The reversal of 1345442211 is 1122445431.

1345442211 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 442 + 211 = 666.

It is not a de Polignac number, because 1345442211 - 2² = 1345442207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1345442221) 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 31 ways as a sum of consecutive naturals, for example, 5751 + ... + 52191.

It is an arithmetic number, because the mean of its divisors is an integer number (66179850).

Almost surely, 2^1345442211 is an apocalyptic number.

1345442211 is a deficient number, since it is larger than the sum of its proper divisors (772312989).

1345442211 is a wasteful number, since it uses less digits than its factorization.

1345442211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46516 (or 46510 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1345442211 is about 36680.2700508052. The cubic root of 1345442211 is about 1103.9642666246.

Adding to 1345442211 its reverse (1122445431), we get a palindrome (2467887642).

It can be divided in two parts, 1345 and 442211, that added together give a square (443556 = 666²).

The spelling of 1345442211 in words is "one billion, three hundred forty-five million, four hundred forty-two thousand, two hundred eleven".