2031121441 has 2 divisors, whose sum is σ = 2031121442. Its totient is φ = 2031121440.

The previous prime is 2031121439. The next prime is 2031121447. The reversal of 2031121441 is 1441211302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1269140625 + 761980816 = 35625^2 + 27604^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031121441 - 2¹ = 2031121439 is a prime.

Together with 2031121439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2031121447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015560720 + 1015560721.

It is an arithmetic number, because the mean of its divisors is an integer number (1015560721).

Almost surely, 2^2031121441 is an apocalyptic number.

It is an amenable number.

2031121441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031121441 is an equidigital number, since it uses as much as digits as its factorization.

2031121441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2031121441 is about 45067.9646866818. The cubic root of 2031121441 is about 1266.4225361070.

Adding to 2031121441 its reverse (1441211302), we get a palindrome (3472332743).

The spelling of 2031121441 in words is "two billion, thirty-one million, one hundred twenty-one thousand, four hundred forty-one".