2891131037 has 2 divisors, whose sum is σ = 2891131038. Its totient is φ = 2891131036.

The previous prime is 2891130971. The next prime is 2891131043. The reversal of 2891131037 is 7301311982.

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., 1686416356 + 1204714681 = 41066^2 + 34709^2 .

It is a cyclic number.

It is not a de Polignac number, because 2891131037 - 2¹² = 2891126941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2891130988 and 2891131006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2891131057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445565518 + 1445565519.

It is an arithmetic number, because the mean of its divisors is an integer number (1445565519).

Almost surely, 2^2891131037 is an apocalyptic number.

It is an amenable number.

2891131037 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891131037 is an equidigital number, since it uses as much as digits as its factorization.

2891131037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2891131037 is about 53769.2387615819. The cubic root of 2891131037 is about 1424.5879242676.

The spelling of 2891131037 in words is "two billion, eight hundred ninety-one million, one hundred thirty-one thousand, thirty-seven".