3531788421 has 16 divisors (see below), whose sum is σ = 5513036928. Its totient is φ = 1968940800.

The previous prime is 3531788327. The next prime is 3531788441. The reversal of 3531788421 is 1248871353.

It is not a de Polignac number, because 3531788421 - 2¹⁰ = 3531787397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3531788441) 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, 2050120 + ... + 2051841.

It is an arithmetic number, because the mean of its divisors is an integer number (344564808).

Almost surely, 2^3531788421 is an apocalyptic number.

It is an amenable number.

3531788421 is a deficient number, since it is larger than the sum of its proper divisors (1981248507).

3531788421 is a wasteful number, since it uses less digits than its factorization.

3531788421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102012.

The product of its digits is 161280, while the sum is 42.

The square root of 3531788421 is about 59428.8517556919. The cubic root of 3531788421 is about 1522.8772286865.

The spelling of 3531788421 in words is "three billion, five hundred thirty-one million, seven hundred eighty-eight thousand, four hundred twenty-one".