2500631311 has 2 divisors, whose sum is σ = 2500631312. Its totient is φ = 2500631310.

The previous prime is 2500631293. The next prime is 2500631333. The reversal of 2500631311 is 1131360052.

It is a happy number.

It is an a-pointer prime, because the next prime (2500631333) can be obtained adding 2500631311 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2500631311 - 2¹³ = 2500623119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2500631351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250315655 + 1250315656.

It is an arithmetic number, because the mean of its divisors is an integer number (1250315656).

Almost surely, 2^2500631311 is an apocalyptic number.

2500631311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500631311 is an equidigital number, since it uses as much as digits as its factorization.

2500631311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 2500631311 is about 50006.3127114967. The cubic root of 2500631311 is about 1357.3230414624.

Adding to 2500631311 its reverse (1131360052), we get a palindrome (3631991363).

The spelling of 2500631311 in words is "two billion, five hundred million, six hundred thirty-one thousand, three hundred eleven".