311224130331131 has 32 divisors (see below), whose sum is σ = 338009264355840. Its totient is φ = 285601435467264.

The previous prime is 311224130331083. The next prime is 311224130331137. The reversal of 311224130331131 is 131133031422113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311224130331131 is a prime.

It is a super-2 number, since 2×311224130331131² (a number of 30 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 = 311224130331094 and 311224130331103.

It is not an unprimeable number, because it can be changed into a prime (311224130331137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56444081 + ... + 61712093.

It is an arithmetic number, because the mean of its divisors is an integer number (10562789511120).

Almost surely, 2^{311224130331131} is an apocalyptic number.

311224130331131 is a deficient number, since it is larger than the sum of its proper divisors (26785134024709).

311224130331131 is a wasteful number, since it uses less digits than its factorization.

311224130331131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268675.

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 311224130331131 its reverse (131133031422113), we get a palindrome (442357161753244).

The spelling of 311224130331131 in words is "three hundred eleven trillion, two hundred twenty-four billion, one hundred thirty million, three hundred thirty-one thousand, one hundred thirty-one".