3201581497 has 4 divisors (see below), whose sum is σ = 3202094160. Its totient is φ = 3201068836.

The previous prime is 3201581483. The next prime is 3201581507. The reversal of 3201581497 is 7941851023.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3201581497 is a prime.

It is a super-2 number, since 2×3201581497² = 20500248163865522018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3201581447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246847 + ... + 259492.

It is an arithmetic number, because the mean of its divisors is an integer number (800523540).

Almost surely, 2^3201581497 is an apocalyptic number.

It is an amenable number.

3201581497 is a deficient number, since it is larger than the sum of its proper divisors (512663).

3201581497 is an equidigital number, since it uses as much as digits as its factorization.

3201581497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512662.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 3201581497 is about 56582.5193588974. The cubic root of 3201581497 is about 1473.8553213398.

The spelling of 3201581497 in words is "three billion, two hundred one million, five hundred eighty-one thousand, four hundred ninety-seven".