351320131021 has 2 divisors, whose sum is σ = 351320131022. Its totient is φ = 351320131020.

The previous prime is 351320130983. The next prime is 351320131027. The reversal of 351320131021 is 120131023153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339584742121 + 11735388900 = 582739^2 + 108330^2 .

It is a cyclic number.

It is not a de Polignac number, because 351320131021 - 2⁷ = 351320130893 is a prime.

It is a super-3 number, since 3×351320131021³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 351320130983 and 351320131001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351320131027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175660065510 + 175660065511.

It is an arithmetic number, because the mean of its divisors is an integer number (175660065511).

Almost surely, 2^351320131021 is an apocalyptic number.

It is an amenable number.

351320131021 is a deficient number, since it is larger than the sum of its proper divisors (1).

351320131021 is an equidigital number, since it uses as much as digits as its factorization.

351320131021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 351320131021 its reverse (120131023153), we get a palindrome (471451154174).

The spelling of 351320131021 in words is "three hundred fifty-one billion, three hundred twenty million, one hundred thirty-one thousand, twenty-one".