134251001321 has 2 divisors, whose sum is σ = 134251001322. Its totient is φ = 134251001320.

The previous prime is 134251001293. The next prime is 134251001383. The reversal of 134251001321 is 123100152431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131794411225 + 2456590096 = 363035^2 + 49564^2 .

It is a cyclic number.

It is not a de Polignac number, because 134251001321 - 2²⁶ = 134183892457 is a prime.

It is a super-2 number, since 2×134251001321² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (134251001821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67125500660 + 67125500661.

It is an arithmetic number, because the mean of its divisors is an integer number (67125500661).

Almost surely, 2^134251001321 is an apocalyptic number.

It is an amenable number.

134251001321 is a deficient number, since it is larger than the sum of its proper divisors (1).

134251001321 is an equidigital number, since it uses as much as digits as its factorization.

134251001321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 134251001321 its reverse (123100152431), we get a palindrome (257351153752).

The spelling of 134251001321 in words is "one hundred thirty-four billion, two hundred fifty-one million, one thousand, three hundred twenty-one".