3531144872 has 8 divisors (see below), whose sum is σ = 6620896650. Its totient is φ = 1765572432.

The previous prime is 3531144863. The next prime is 3531144887. The reversal of 3531144872 is 2784411353.

It can be written as a sum of positive squares in only one way, i.e., 3446394436 + 84750436 = 58706^2 + 9206^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220696547 + ... + 220696562.

Almost surely, 2^3531144872 is an apocalyptic number.

It is an amenable number.

3531144872 is a deficient number, since it is larger than the sum of its proper divisors (3089751778).

3531144872 is a wasteful number, since it uses less digits than its factorization.

3531144872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441393115 (or 441393111 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 3531144872 is about 59423.4370597999. The cubic root of 3531144872 is about 1522.7847254433.

The spelling of 3531144872 in words is "three billion, five hundred thirty-one million, one hundred forty-four thousand, eight hundred seventy-two".