311503303243131 has 8 divisors (see below), whose sum is σ = 415349162932560. Its totient is φ = 207663156191232.

The previous prime is 311503303243051. The next prime is 311503303243201. The reversal of 311503303243131 is 131342303305113.

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 311503303243131 - 2¹³ = 311503303234939 is a prime.

It is a super-2 number, since 2×311503303243131² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311503303243092 and 311503303243101.

It is not an unprimeable number, because it can be changed into a prime (311503303243631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428032146 + ... + 1428250263.

It is an arithmetic number, because the mean of its divisors is an integer number (51918645366570).

Almost surely, 2^{311503303243131} is an apocalyptic number.

311503303243131 is a deficient number, since it is larger than the sum of its proper divisors (103845859689429).

311503303243131 is a wasteful number, since it uses less digits than its factorization.

311503303243131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856318765.

The product of its (nonzero) digits is 29160, while the sum is 33.

Adding to 311503303243131 its reverse (131342303305113), we get a palindrome (442845606548244).

The spelling of 311503303243131 in words is "three hundred eleven trillion, five hundred three billion, three hundred three million, two hundred forty-three thousand, one hundred thirty-one".