31144333142449 has 2 divisors, whose sum is σ = 31144333142450. Its totient is φ = 31144333142448.

The previous prime is 31144333142407. The next prime is 31144333142467. The reversal of 31144333142449 is 94424133344113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16965666723600 + 14178666418849 = 4118940^2 + 3765457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31144333142449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31144333142399 and 31144333142408.

It is not a weakly prime, because it can be changed into another prime (31144333146449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15572166571224 + 15572166571225.

It is an arithmetic number, because the mean of its divisors is an integer number (15572166571225).

Almost surely, 2^{31144333142449} is an apocalyptic number.

It is an amenable number.

31144333142449 is a deficient number, since it is larger than the sum of its proper divisors (1).

31144333142449 is an equidigital number, since it uses as much as digits as its factorization.

31144333142449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 46.

The spelling of 31144333142449 in words is "thirty-one trillion, one hundred forty-four billion, three hundred thirty-three million, one hundred forty-two thousand, four hundred forty-nine".