1209611341 has 4 divisors (see below), whose sum is σ = 1210765500. Its totient is φ = 1208457184.

The previous prime is 1209611339. The next prime is 1209611357. The reversal of 1209611341 is 1431169021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1431169021 = 17 ⋅84186413.

It can be written as a sum of positive squares in 2 ways, for example, as 679644900 + 529966441 = 26070^2 + 23021^2 .

It is a cyclic number.

It is not a de Polignac number, because 1209611341 - 2¹ = 1209611339 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 (1209711341) 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, 575506 + ... + 577603.

It is an arithmetic number, because the mean of its divisors is an integer number (302691375).

Almost surely, 2^1209611341 is an apocalyptic number.

It is an amenable number.

1209611341 is a deficient number, since it is larger than the sum of its proper divisors (1154159).

1209611341 is a wasteful number, since it uses less digits than its factorization.

1209611341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154158.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1209611341 is about 34779.4672328373. The cubic root of 1209611341 is about 1065.4881320143.

The spelling of 1209611341 in words is "one billion, two hundred nine million, six hundred eleven thousand, three hundred forty-one".