511120431 has 6 divisors (see below), whose sum is σ = 738285080. Its totient is φ = 340746948.

The previous prime is 511120427. The next prime is 511120469. The reversal of 511120431 is 134021115.

511120431 is a `hidden beast` number, since 511 + 120 + 4 + 31 = 666.

It is not a de Polignac number, because 511120431 - 2² = 511120427 is a prime.

It is a super-3 number, since 3×511120431³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511120411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28395571 + ... + 28395588.

Almost surely, 2^511120431 is an apocalyptic number.

511120431 is a deficient number, since it is larger than the sum of its proper divisors (227164649).

511120431 is a wasteful number, since it uses less digits than its factorization.

511120431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56791165 (or 56791162 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 511120431 is about 22607.9727308753. The cubic root of 511120431 is about 799.5416285655.

Adding to 511120431 its reverse (134021115), we get a palindrome (645141546).

The spelling of 511120431 in words is "five hundred eleven million, one hundred twenty thousand, four hundred thirty-one".