2961235238981 has 2 divisors, whose sum is σ = 2961235238982. Its totient is φ = 2961235238980.

The previous prime is 2961235238957. The next prime is 2961235238999. The reversal of 2961235238981 is 1898325321692.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2645128168225 + 316107070756 = 1626385^2 + 562234^2 .

It is a cyclic number.

It is not a de Polignac number, because 2961235238981 - 2¹⁴ = 2961235222597 is a prime.

It is a super-2 number, since 2×2961235238981² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2961235238981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2961235238911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1480617619490 + 1480617619491.

It is an arithmetic number, because the mean of its divisors is an integer number (1480617619491).

Almost surely, 2^{2961235238981} is an apocalyptic number.

It is an amenable number.

2961235238981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2961235238981 is an equidigital number, since it uses as much as digits as its factorization.

2961235238981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 59.

The spelling of 2961235238981 in words is "two trillion, nine hundred sixty-one billion, two hundred thirty-five million, two hundred thirty-eight thousand, nine hundred eighty-one".