512142311 has 4 divisors (see below), whose sum is σ = 534409392. Its totient is φ = 489875232.

The previous prime is 512142259. The next prime is 512142313. The reversal of 512142311 is 113241215.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512142311 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 (512142313) 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, 11133506 + ... + 11133551.

It is an arithmetic number, because the mean of its divisors is an integer number (133602348).

Almost surely, 2^512142311 is an apocalyptic number.

512142311 is a deficient number, since it is larger than the sum of its proper divisors (22267081).

512142311 is a wasteful number, since it uses less digits than its factorization.

512142311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22267080.

The product of its digits is 240, while the sum is 20.

The square root of 512142311 is about 22630.5614380200. The cubic root of 512142311 is about 800.0741134463.

Adding to 512142311 its reverse (113241215), we get a palindrome (625383526).

The spelling of 512142311 in words is "five hundred twelve million, one hundred forty-two thousand, three hundred eleven".