31112111029 has 2 divisors, whose sum is σ = 31112111030.
Its totient is φ = 31112111028.
The previous prime is 31112111011. The next prime is 31112111047. The reversal of 31112111029 is 92011121113.
It is a balanced prime because it is at equal distance from previous prime (31112111011) and next prime (31112111047).
It can be written as a sum of positive squares in only one way, i.e., 15749748004 + 15362363025 = 125498^2 + 123945^2
It is a cyclic number.
It is not a de Polignac number, because 31112111029 - 27 = 31112110901 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (31112111059) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556055514 + 15556055515.
It is an arithmetic number, because the mean of its divisors is an integer number (15556055515).
Almost surely, 231112111029 is an apocalyptic number.
It is an amenable number.
31112111029 is a deficient number, since it is larger than the sum of its proper divisors (1).
31112111029 is an equidigital number, since it uses as much as digits as its factorization.
31112111029 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 108, while the sum is 22.
The spelling of 31112111029 in words is "thirty-one billion, one hundred twelve million, one hundred eleven thousand, twenty-nine".