142321313 has 2 divisors, whose sum is σ = 142321314. Its totient is φ = 142321312.

The previous prime is 142321307. The next prime is 142321327. The reversal of 142321313 is 313123241.

142321313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100240144 + 42081169 = 10012^2 + 6487^2 .

It is a cyclic number.

It is not a de Polignac number, because 142321313 - 2²² = 138127009 is a prime.

It is a super-2 number, since 2×142321313² = 40510712268087938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142321513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71160656 + 71160657.

It is an arithmetic number, because the mean of its divisors is an integer number (71160657).

Almost surely, 2^142321313 is an apocalyptic number.

It is an amenable number.

142321313 is a deficient number, since it is larger than the sum of its proper divisors (1).

142321313 is an equidigital number, since it uses as much as digits as its factorization.

142321313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 142321313 is about 11929.8496637636. The cubic root of 142321313 is about 522.1035512873.

Adding to 142321313 its reverse (313123241), we get a palindrome (455444554).

The spelling of 142321313 in words is "one hundred forty-two million, three hundred twenty-one thousand, three hundred thirteen".