311320101231 has 6 divisors (see below), whose sum is σ = 449684590680. Its totient is φ = 207546734148.

The previous prime is 311320101221. The next prime is 311320101277. The reversal of 311320101231 is 132101023113.

311320101231 is a `hidden beast` number, since 3 + 11 + 320 + 101 + 231 = 666.

It is not a de Polignac number, because 311320101231 - 2¹³ = 311320093039 is a prime.

It is a super-2 number, since 2×311320101231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311320101221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17295561171 + ... + 17295561188.

It is an arithmetic number, because the mean of its divisors is an integer number (74947431780).

Almost surely, 2^311320101231 is an apocalyptic number.

311320101231 is a deficient number, since it is larger than the sum of its proper divisors (138364489449).

311320101231 is a wasteful number, since it uses less digits than its factorization.

311320101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34591122365 (or 34591122362 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 311320101231 its reverse (132101023113), we get a palindrome (443421124344).

The spelling of 311320101231 in words is "three hundred eleven billion, three hundred twenty million, one hundred one thousand, two hundred thirty-one".