3221990431 has 8 divisors (see below), whose sum is σ = 3559392000. Its totient is φ = 2892004440.

The previous prime is 3221990423. The next prime is 3221990491. The reversal of 3221990431 is 1340991223.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3221990431 - 2³ = 3221990423 is a prime.

It is a super-2 number, since 2×3221990431² = 20762444674911131522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221990491) 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, 1852981 + ... + 1854718.

It is an arithmetic number, because the mean of its divisors is an integer number (444924000).

Almost surely, 2^3221990431 is an apocalyptic number.

3221990431 is a deficient number, since it is larger than the sum of its proper divisors (337401569).

3221990431 is a wasteful number, since it uses less digits than its factorization.

3221990431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707789.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 3221990431 is about 56762.5794956501. The cubic root of 3221990431 is about 1476.9804565678.

The spelling of 3221990431 in words is "three billion, two hundred twenty-one million, nine hundred ninety thousand, four hundred thirty-one".