354131121131477 has 2 divisors, whose sum is σ = 354131121131478. Its totient is φ = 354131121131476.

The previous prime is 354131121131423. The next prime is 354131121131509. The reversal of 354131121131477 is 774131121131453.

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., 204058967976241 + 150072153155236 = 14284921^2 + 12250394^2 .

It is an emirp because it is prime and its reverse (774131121131453) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354131121131477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354131126131477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177065560565738 + 177065560565739.

It is an arithmetic number, because the mean of its divisors is an integer number (177065560565739).

Almost surely, 2^{354131121131477} is an apocalyptic number.

It is an amenable number.

354131121131477 is a deficient number, since it is larger than the sum of its proper divisors (1).

354131121131477 is an equidigital number, since it uses as much as digits as its factorization.

354131121131477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The spelling of 354131121131477 in words is "three hundred fifty-four trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred thirty-one thousand, four hundred seventy-seven".