31105450503437 has 2 divisors, whose sum is σ = 31105450503438. Its totient is φ = 31105450503436.

The previous prime is 31105450503431. The next prime is 31105450503487. The reversal of 31105450503437 is 73430505450113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21319884083716 + 9785566419721 = 4617346^2 + 3128189^2 .

It is a cyclic number.

It is not a de Polignac number, because 31105450503437 - 2¹⁴ = 31105450487053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31105450503394 and 31105450503403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31105450503431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15552725251718 + 15552725251719.

It is an arithmetic number, because the mean of its divisors is an integer number (15552725251719).

Almost surely, 2^{31105450503437} is an apocalyptic number.

It is an amenable number.

31105450503437 is a deficient number, since it is larger than the sum of its proper divisors (1).

31105450503437 is an equidigital number, since it uses as much as digits as its factorization.

31105450503437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378000, while the sum is 41.

The spelling of 31105450503437 in words is "thirty-one trillion, one hundred five billion, four hundred fifty million, five hundred three thousand, four hundred thirty-seven".