511442131 has 8 divisors (see below), whose sum is σ = 516694464. Its totient is φ = 506198760.

The previous prime is 511442111. The next prime is 511442137. The reversal of 511442131 is 131244115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511442131 is a prime.

It is a super-2 number, since 2×511442131² = 523146106723642322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (511442137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226896 + ... + 229138.

It is an arithmetic number, because the mean of its divisors is an integer number (64586808).

Almost surely, 2^511442131 is an apocalyptic number.

511442131 is a deficient number, since it is larger than the sum of its proper divisors (5252333).

511442131 is a wasteful number, since it uses less digits than its factorization.

511442131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481.

The product of its digits is 480, while the sum is 22.

The square root of 511442131 is about 22615.0863584467. The cubic root of 511442131 is about 799.7093376362.

Adding to 511442131 its reverse (131244115), we get a palindrome (642686246).

The spelling of 511442131 in words is "five hundred eleven million, four hundred forty-two thousand, one hundred thirty-one".