2031433240 has 32 divisors (see below), whose sum is σ = 4577478480. Its totient is φ = 811372672.

The previous prime is 2031433213. The next prime is 2031433247. The reversal of 2031433240 is 423341302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031433247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9859 + ... + 64498.

Almost surely, 2^2031433240 is an apocalyptic number.

2031433240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031433240 is an abundant number, since it is smaller than the sum of its proper divisors (2546045240).

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

2031433240 is a wasteful number, since it uses less digits than its factorization.

2031433240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75051 (or 75047 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 2031433240 is about 45071.4237627346. The cubic root of 2031433240 is about 1266.4873359541.

Adding to 2031433240 its reverse (423341302), we get a palindrome (2454774542).

The spelling of 2031433240 in words is "two billion, thirty-one million, four hundred thirty-three thousand, two hundred forty".