2031402040 has 64 divisors (see below), whose sum is σ = 4682655360. Its totient is φ = 792760320.

The previous prime is 2031402019. The next prime is 2031402041. The reversal of 2031402040 is 402041302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031402041) 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, 662110 + ... + 665170.

It is an arithmetic number, because the mean of its divisors is an integer number (73166490).

Almost surely, 2^2031402040 is an apocalyptic number.

2031402040 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 2031402040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2341327680).

2031402040 is an abundant number, since it is smaller than the sum of its proper divisors (2651253320).

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

2031402040 is a wasteful number, since it uses less digits than its factorization.

2031402040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472 (or 3468 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2031402040 is about 45071.0776440946. The cubic root of 2031402040 is about 1266.4808520906.

Adding to 2031402040 its reverse (402041302), we get a palindrome (2433443342).

The spelling of 2031402040 in words is "two billion, thirty-one million, four hundred two thousand, forty".