507211231 has 4 divisors (see below), whose sum is σ = 510248592. Its totient is φ = 504173872.

The previous prime is 507211217. The next prime is 507211277. The reversal of 507211231 is 132112705.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132112705 = 5 ⋅26422541.

It is a cyclic number.

It is not a de Polignac number, because 507211231 - 2¹⁷ = 507080159 is a prime.

It is a super-2 number, since 2×507211231² = 514526465705070722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507212231) 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, 1518430 + ... + 1518763.

It is an arithmetic number, because the mean of its divisors is an integer number (127562148).

Almost surely, 2^507211231 is an apocalyptic number.

507211231 is a deficient number, since it is larger than the sum of its proper divisors (3037361).

507211231 is a wasteful number, since it uses less digits than its factorization.

507211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3037360.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 507211231 is about 22521.3505589696. The cubic root of 507211231 is about 797.4980328368.

Adding to 507211231 its reverse (132112705), we get a palindrome (639323936).

The spelling of 507211231 in words is "five hundred seven million, two hundred eleven thousand, two hundred thirty-one".