210131451329 has 2 divisors, whose sum is σ = 210131451330. Its totient is φ = 210131451328.

The previous prime is 210131451289. The next prime is 210131451359. The reversal of 210131451329 is 923154131012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138885164929 + 71246286400 = 372673^2 + 266920^2 .

It is a cyclic number.

It is not a de Polignac number, because 210131451329 - 2³² = 205836484033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210131451295 and 210131451304.

It is not a weakly prime, because it can be changed into another prime (210131451359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105065725664 + 105065725665.

It is an arithmetic number, because the mean of its divisors is an integer number (105065725665).

Almost surely, 2^210131451329 is an apocalyptic number.

It is an amenable number.

210131451329 is a deficient number, since it is larger than the sum of its proper divisors (1).

210131451329 is an equidigital number, since it uses as much as digits as its factorization.

210131451329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 210131451329 in words is "two hundred ten billion, one hundred thirty-one million, four hundred fifty-one thousand, three hundred twenty-nine".