31321111033189 has 2 divisors, whose sum is σ = 31321111033190. Its totient is φ = 31321111033188.

The previous prime is 31321111033081. The next prime is 31321111033213. The reversal of 31321111033189 is 98133011112313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30390599996289 + 930511036900 = 5512767^2 + 964630^2 .

It is a cyclic number.

It is not a de Polignac number, because 31321111033189 - 2¹⁷ = 31321110902117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31321111033489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660555516594 + 15660555516595.

It is an arithmetic number, because the mean of its divisors is an integer number (15660555516595).

Almost surely, 2^{31321111033189} is an apocalyptic number.

It is an amenable number.

31321111033189 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321111033189 is an equidigital number, since it uses as much as digits as its factorization.

31321111033189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 31321111033189 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred eleven million, thirty-three thousand, one hundred eighty-nine".