2031957720 has 96 divisors (see below), whose sum is σ = 7111868400. Its totient is φ = 500173056.

The previous prime is 2031957677. The next prime is 2031957727. The reversal of 2031957720 is 277591302.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031957727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212410 + ... + 221769.

Almost surely, 2^2031957720 is an apocalyptic number.

2031957720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031957720 is an abundant number, since it is smaller than the sum of its proper divisors (5079910680).

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

2031957720 is a wasteful number, since it uses less digits than its factorization.

2031957720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434209 (or 434202 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 2031957720 is about 45077.2417079839. The cubic root of 2031957720 is about 1266.5963214243.

The spelling of 2031957720 in words is "two billion, thirty-one million, nine hundred fifty-seven thousand, seven hundred twenty".