31302122141 has 2 divisors, whose sum is σ = 31302122142. Its totient is φ = 31302122140.

The previous prime is 31302122087. The next prime is 31302122143. The reversal of 31302122141 is 14122120313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29499780025 + 1802342116 = 171755^2 + 42454^2 .

It is a cyclic number.

It is not a de Polignac number, because 31302122141 - 2¹⁸ = 31301859997 is a prime.

Together with 31302122143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31302122143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651061070 + 15651061071.

It is an arithmetic number, because the mean of its divisors is an integer number (15651061071).

Almost surely, 2^31302122141 is an apocalyptic number.

It is an amenable number.

31302122141 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302122141 is an equidigital number, since it uses as much as digits as its factorization.

31302122141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31302122141 its reverse (14122120313), we get a palindrome (45424242454).

The spelling of 31302122141 in words is "thirty-one billion, three hundred two million, one hundred twenty-two thousand, one hundred forty-one".