351444431194397 has 2 divisors, whose sum is σ = 351444431194398. Its totient is φ = 351444431194396.

The previous prime is 351444431194387. The next prime is 351444431194429. The reversal of 351444431194397 is 793491134444153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323997876003481 + 27446555190916 = 17999941^2 + 5238946^2 .

It is a cyclic number.

It is not a de Polignac number, because 351444431194397 - 2³⁶ = 351375711717661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351444431194387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175722215597198 + 175722215597199.

It is an arithmetic number, because the mean of its divisors is an integer number (175722215597199).

Almost surely, 2^{351444431194397} is an apocalyptic number.

It is an amenable number.

351444431194397 is a deficient number, since it is larger than the sum of its proper divisors (1).

351444431194397 is an equidigital number, since it uses as much as digits as its factorization.

351444431194397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 62.

The spelling of 351444431194397 in words is "three hundred fifty-one trillion, four hundred forty-four billion, four hundred thirty-one million, one hundred ninety-four thousand, three hundred ninety-seven".