311430000341021 has 2 divisors, whose sum is σ = 311430000341022. Its totient is φ = 311430000341020.

The previous prime is 311430000341017. The next prime is 311430000341041. The reversal of 311430000341021 is 120143000034113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310050855444121 + 1379144896900 = 17608261^2 + 1174370^2 .

It is a cyclic number.

It is not a de Polignac number, because 311430000341021 - 2² = 311430000341017 is a prime.

It is a super-2 number, since 2×311430000341021² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311430000341041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155715000170510 + 155715000170511.

It is an arithmetic number, because the mean of its divisors is an integer number (155715000170511).

Almost surely, 2^{311430000341021} is an apocalyptic number.

It is an amenable number.

311430000341021 is a deficient number, since it is larger than the sum of its proper divisors (1).

311430000341021 is an equidigital number, since it uses as much as digits as its factorization.

311430000341021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 311430000341021 its reverse (120143000034113), we get a palindrome (431573000375134).

The spelling of 311430000341021 in words is "three hundred eleven trillion, four hundred thirty billion, three hundred forty-one thousand, twenty-one".