4312120155331 has 2 divisors, whose sum is σ = 4312120155332. Its totient is φ = 4312120155330.

The previous prime is 4312120155313. The next prime is 4312120155349. The reversal of 4312120155331 is 1335510212134.

Together with previous prime (4312120155313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (4312120155313) and next prime (4312120155349).

It is a cyclic number.

It is not a de Polignac number, because 4312120155331 - 2⁹ = 4312120154819 is a prime.

It is a super-2 number, since 2×4312120155331² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4312120155293 and 4312120155302.

It is not a weakly prime, because it can be changed into another prime (4312120155361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156060077665 + 2156060077666.

It is an arithmetic number, because the mean of its divisors is an integer number (2156060077666).

Almost surely, 2^{4312120155331} is an apocalyptic number.

4312120155331 is a deficient number, since it is larger than the sum of its proper divisors (1).

4312120155331 is an equidigital number, since it uses as much as digits as its factorization.

4312120155331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 4312120155331 its reverse (1335510212134), we get a palindrome (5647630367465).

The spelling of 4312120155331 in words is "four trillion, three hundred twelve billion, one hundred twenty million, one hundred fifty-five thousand, three hundred thirty-one".