2631711990 has 32 divisors (see below), whose sum is σ = 6396065280. Its totient is φ = 692905824.

The previous prime is 2631711989. The next prime is 2631711997. The reversal of 2631711990 is 991171362.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631711997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 552844 + ... + 557583.

It is an arithmetic number, because the mean of its divisors is an integer number (199877040).

Almost surely, 2^2631711990 is an apocalyptic number.

2631711990 is an abundant number, since it is smaller than the sum of its proper divisors (3764353290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2631711990 is a wasteful number, since it uses less digits than its factorization.

2631711990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110516.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 2631711990 is about 51300.2143270377. The cubic root of 2631711990 is about 1380.6368253831.

The spelling of 2631711990 in words is "two billion, six hundred thirty-one million, seven hundred eleven thousand, nine hundred ninety".