2731631525989 has 2 divisors, whose sum is σ = 2731631525990. Its totient is φ = 2731631525988.

The previous prime is 2731631525971. The next prime is 2731631525999. The reversal of 2731631525989 is 9895251361372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2074262452900 + 657369073089 = 1440230^2 + 810783^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731631525989 - 2²⁷ = 2731497308261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2731631525999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365815762994 + 1365815762995.

It is an arithmetic number, because the mean of its divisors is an integer number (1365815762995).

Almost surely, 2^{2731631525989} is an apocalyptic number.

It is an amenable number.

2731631525989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2731631525989 is an equidigital number, since it uses as much as digits as its factorization.

2731631525989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24494400, while the sum is 61.

The spelling of 2731631525989 in words is "two trillion, seven hundred thirty-one billion, six hundred thirty-one million, five hundred twenty-five thousand, nine hundred eighty-nine".