311123103231 has 8 divisors (see below), whose sum is σ = 415249406464. Its totient is φ = 207206101080.

The previous prime is 311123103199. The next prime is 311123103257. The reversal of 311123103231 is 132301321113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311123103231 - 2⁵ = 311123103199 is a prime.

It is a super-2 number, since 2×311123103231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311123103198 and 311123103207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311123103131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52321801 + ... + 52327746.

It is an arithmetic number, because the mean of its divisors is an integer number (51906175808).

Almost surely, 2^311123103231 is an apocalyptic number.

311123103231 is a deficient number, since it is larger than the sum of its proper divisors (104126303233).

311123103231 is a wasteful number, since it uses less digits than its factorization.

311123103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104650541.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 311123103231 its reverse (132301321113), we get a palindrome (443424424344).

The spelling of 311123103231 in words is "three hundred eleven billion, one hundred twenty-three million, one hundred three thousand, two hundred thirty-one".