2031397428 has 12 divisors (see below), whose sum is σ = 4739927360. Its totient is φ = 677132472.

The previous prime is 2031397411. The next prime is 2031397463. The reversal of 2031397428 is 8247931302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84641548 + ... + 84641571.

Almost surely, 2^2031397428 is an apocalyptic number.

It is an amenable number.

2031397428 is an abundant number, since it is smaller than the sum of its proper divisors (2708529932).

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

2031397428 is a wasteful number, since it uses less digits than its factorization.

2031397428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169283126 (or 169283124 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 2031397428 is about 45071.0264804342. The cubic root of 2031397428 is about 1266.4798936370.

The spelling of 2031397428 in words is "two billion, thirty-one million, three hundred ninety-seven thousand, four hundred twenty-eight".