401243430211289 has 2 divisors, whose sum is σ = 401243430211290. Its totient is φ = 401243430211288.

The previous prime is 401243430211199. The next prime is 401243430211369. The reversal of 401243430211289 is 982112034342104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219399284009689 + 181844146201600 = 14812133^2 + 13484960^2 .

It is a cyclic number.

It is not a de Polignac number, because 401243430211289 - 2⁴⁴ = 383651244166873 is a prime.

It is not a weakly prime, because it can be changed into another prime (401243430211189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200621715105644 + 200621715105645.

It is an arithmetic number, because the mean of its divisors is an integer number (200621715105645).

Almost surely, 2^{401243430211289} is an apocalyptic number.

It is an amenable number.

401243430211289 is a deficient number, since it is larger than the sum of its proper divisors (1).

401243430211289 is an equidigital number, since it uses as much as digits as its factorization.

401243430211289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 401243430211289 in words is "four hundred one trillion, two hundred forty-three billion, four hundred thirty million, two hundred eleven thousand, two hundred eighty-nine".