2031687500 has 42 divisors (see below), whose sum is σ = 4444396236. Its totient is φ = 812650000.

The previous prime is 2031687457. The next prime is 2031687547. The reversal of 2031687500 is 57861302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 46247 + ... + 78753.

It is an arithmetic number, because the mean of its divisors is an integer number (105818958).

Almost surely, 2^2031687500 is an apocalyptic number.

2031687500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2031687500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2222198118).

2031687500 is an abundant number, since it is smaller than the sum of its proper divisors (2412708736).

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

2031687500 is an frugal number, since it uses more digits than its factorization.

2031687500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32541 (or 32514 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2031687500 is about 45074.2443086958. The cubic root of 2031687500 is about 1266.5401728100.

The spelling of 2031687500 in words is "two billion, thirty-one million, six hundred eighty-seven thousand, five hundred".