3311312231 has 4 divisors (see below), whose sum is σ = 3455282352. Its totient is φ = 3167342112.

The previous prime is 3311312219. The next prime is 3311312243. The reversal of 3311312231 is 1322131133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322131133 = 281 ⋅4705093.

It is an interprime number because it is at equal distance from previous prime (3311312219) and next prime (3311312243).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3311312231 is a prime.

It is a super-2 number, since 2×3311312231² = 21929577382340394722, 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 (3311312261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71985026 + ... + 71985071.

It is an arithmetic number, because the mean of its divisors is an integer number (863820588).

Almost surely, 2^3311312231 is an apocalyptic number.

3311312231 is a deficient number, since it is larger than the sum of its proper divisors (143970121).

3311312231 is a wasteful number, since it uses less digits than its factorization.

3311312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143970120.

The product of its digits is 324, while the sum is 20.

The square root of 3311312231 is about 57544.0025632559. The cubic root of 3311312231 is about 1490.5047958547.

Adding to 3311312231 its reverse (1322131133), we get a palindrome (4633443364).

The spelling of 3311312231 in words is "three billion, three hundred eleven million, three hundred twelve thousand, two hundred thirty-one".