2173490750831 has 2 divisors, whose sum is σ = 2173490750832. Its totient is φ = 2173490750830.

The previous prime is 2173490750737. The next prime is 2173490750839. The reversal of 2173490750831 is 1380570943712.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2173490750831 is a prime.

It is a super-2 number, since 2×2173490750831² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2173490750831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2173490750839) 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, 1086745375415 + 1086745375416.

It is an arithmetic number, because the mean of its divisors is an integer number (1086745375416).

Almost surely, 2^{2173490750831} is an apocalyptic number.

2173490750831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173490750831 is an equidigital number, since it uses as much as digits as its factorization.

2173490750831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 2173490750831 in words is "two trillion, one hundred seventy-three billion, four hundred ninety million, seven hundred fifty thousand, eight hundred thirty-one".