3219960981 has 4 divisors (see below), whose sum is σ = 4293281312. Its totient is φ = 2146640652.

The previous prime is 3219960937. The next prime is 3219961009. The reversal of 3219960981 is 1890699123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3219960981 - 2¹⁵ = 3219928213 is a prime.

It is a super-2 number, since 2×3219960981² = 20736297438324964722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3219960981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3219960181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536660161 + ... + 536660166.

It is an arithmetic number, because the mean of its divisors is an integer number (1073320328).

Almost surely, 2^3219960981 is an apocalyptic number.

It is an amenable number.

3219960981 is a deficient number, since it is larger than the sum of its proper divisors (1073320331).

3219960981 is a wasteful number, since it uses less digits than its factorization.

3219960981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073320330.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 3219960981 is about 56744.7000256412. The cubic root of 3219960981 is about 1476.6702872679.

The spelling of 3219960981 in words is "three billion, two hundred nineteen million, nine hundred sixty thousand, nine hundred eighty-one".