2145343311 has 6 divisors (see below), whose sum is σ = 3098829240. Its totient is φ = 1430228868.

The previous prime is 2145343303. The next prime is 2145343349. The reversal of 2145343311 is 1133435412.

It is a happy number.

2145343311 is a `hidden beast` number, since 2 + 1 + 4 + 5 + 343 + 311 = 666.

It is not a de Polignac number, because 2145343311 - 2³ = 2145343303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145343301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119185731 + ... + 119185748.

It is an arithmetic number, because the mean of its divisors is an integer number (516471540).

Almost surely, 2^2145343311 is an apocalyptic number.

2145343311 is a deficient number, since it is larger than the sum of its proper divisors (953485929).

2145343311 is a wasteful number, since it uses less digits than its factorization.

2145343311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238371485 (or 238371482 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2145343311 is about 46317.8508892630. The cubic root of 2145343311 is about 1289.7303907443.

Adding to 2145343311 its reverse (1133435412), we get a palindrome (3278778723).

The spelling of 2145343311 in words is "two billion, one hundred forty-five million, three hundred forty-three thousand, three hundred eleven".