2031305040 has 120 divisors (see below), whose sum is σ = 7074526368. Its totient is φ = 541676160.

The previous prime is 2031305009. The next prime is 2031305051. The reversal of 2031305040 is 405031302.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32806 + ... + 71685.

Almost surely, 2^2031305040 is an apocalyptic number.

2031305040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031305040 is an abundant number, since it is smaller than the sum of its proper divisors (5043221328).

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

2031305040 is a wasteful number, since it uses less digits than its factorization.

2031305040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104519 (or 104501 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2031305040 is about 45070.0015531395. The cubic root of 2031305040 is about 1266.4606935014.

Adding to 2031305040 its reverse (405031302), we get a palindrome (2436336342).

The spelling of 2031305040 in words is "two billion, thirty-one million, three hundred five thousand, forty".