3120311231 has 16 divisors (see below), whose sum is σ = 3339705600. Its totient is φ = 2908819200.

The previous prime is 3120311143. The next prime is 3120311251. The reversal of 3120311231 is 1321130213.

It is a cyclic number.

It is not a de Polignac number, because 3120311231 - 2¹⁴ = 3120294847 is a prime.

It is a super-2 number, since 2×3120311231² = 19472684356609470722, 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 (3120311251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410675 + ... + 418203.

It is an arithmetic number, because the mean of its divisors is an integer number (208731600).

Almost surely, 2^3120311231 is an apocalyptic number.

3120311231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3120311231 is a deficient number, since it is larger than the sum of its proper divisors (219394369).

3120311231 is a wasteful number, since it uses less digits than its factorization.

3120311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8050.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 3120311231 is about 55859.7460699563. The cubic root of 3120311231 is about 1461.2773007691.

Adding to 3120311231 its reverse (1321130213), we get a palindrome (4441441444).

The spelling of 3120311231 in words is "three billion, one hundred twenty million, three hundred eleven thousand, two hundred thirty-one".