3431731240 has 64 divisors (see below), whose sum is σ = 9128764800. Its totient is φ = 1136018688.

The previous prime is 3431731213. The next prime is 3431731243. The reversal of 3431731240 is 421371343.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 3431731199 and 3431731208.

It is not an unprimeable number, because it can be changed into a prime (3431731243) 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, 203194 + ... + 219433.

It is an arithmetic number, because the mean of its divisors is an integer number (142636950).

Almost surely, 2^3431731240 is an apocalyptic number.

It is an amenable number.

3431731240 is an abundant number, since it is smaller than the sum of its proper divisors (5697033560).

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

3431731240 is a wasteful number, since it uses less digits than its factorization.

3431731240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422674 (or 422670 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 3431731240 is about 58580.9801898193. The cubic root of 3431731240 is about 1508.3579711966.

The spelling of 3431731240 in words is "three billion, four hundred thirty-one million, seven hundred thirty-one thousand, two hundred forty".