512323031 has 4 divisors (see below), whose sum is σ = 558897864. Its totient is φ = 465748200.

The previous prime is 512323001. The next prime is 512323043. The reversal of 512323031 is 130323215.

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

It is a cyclic number.

It is not a de Polignac number, because 512323031 - 2¹⁰ = 512322007 is a prime.

It is a super-2 number, since 2×512323031² = 524949776186053922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 512322994 and 512323012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512323001) 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, 23287400 + ... + 23287421.

It is an arithmetic number, because the mean of its divisors is an integer number (139724466).

Almost surely, 2^512323031 is an apocalyptic number.

512323031 is a deficient number, since it is larger than the sum of its proper divisors (46574833).

512323031 is a wasteful number, since it uses less digits than its factorization.

512323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46574832.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 512323031 is about 22634.5539165233. The cubic root of 512323031 is about 800.1682099418.

Adding to 512323031 its reverse (130323215), we get a palindrome (642646246).

The spelling of 512323031 in words is "five hundred twelve million, three hundred twenty-three thousand, thirty-one".