120312312331031 has 2 divisors, whose sum is σ = 120312312331032. Its totient is φ = 120312312331030.

The previous prime is 120312312331019. The next prime is 120312312331063. The reversal of 120312312331031 is 130133213213021.

It is a weak prime.

It is an emirp because it is prime and its reverse (130133213213021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120312312331031 is a prime.

It is a super-2 number, since 2×120312312331031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120312312301031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60156156165515 + 60156156165516.

It is an arithmetic number, because the mean of its divisors is an integer number (60156156165516).

Almost surely, 2^{120312312331031} is an apocalyptic number.

120312312331031 is a deficient number, since it is larger than the sum of its proper divisors (1).

120312312331031 is an equidigital number, since it uses as much as digits as its factorization.

120312312331031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 120312312331031 its reverse (130133213213021), we get a palindrome (250445525544052).

The spelling of 120312312331031 in words is "one hundred twenty trillion, three hundred twelve billion, three hundred twelve million, three hundred thirty-one thousand, thirty-one".