311020141 has 2 divisors, whose sum is σ = 311020142. Its totient is φ = 311020140.

The previous prime is 311020109. The next prime is 311020153. The reversal of 311020141 is 141020113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308740041 + 2280100 = 17571^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 311020141 - 2⁵ = 311020109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311020441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155510070 + 155510071.

It is an arithmetic number, because the mean of its divisors is an integer number (155510071).

Almost surely, 2^311020141 is an apocalyptic number.

It is an amenable number.

311020141 is a deficient number, since it is larger than the sum of its proper divisors (1).

311020141 is an equidigital number, since it uses as much as digits as its factorization.

311020141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 311020141 is about 17635.7631249685. The cubic root of 311020141 is about 677.5315207077.

Adding to 311020141 its reverse (141020113), we get a palindrome (452040254).

The spelling of 311020141 in words is "three hundred eleven million, twenty thousand, one hundred forty-one".