3215523451 has 16 divisors (see below), whose sum is σ = 3806899200. Its totient is φ = 2657416608.

The previous prime is 3215523449. The next prime is 3215523457. The reversal of 3215523451 is 1543255123.

It is not a de Polignac number, because 3215523451 - 2¹ = 3215523449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3215523457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140170 + ... + 161488.

It is an arithmetic number, because the mean of its divisors is an integer number (237931200).

Almost surely, 2^3215523451 is an apocalyptic number.

3215523451 is a deficient number, since it is larger than the sum of its proper divisors (591375749).

3215523451 is a wasteful number, since it uses less digits than its factorization.

3215523451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22098.

The product of its digits is 18000, while the sum is 31.

The square root of 3215523451 is about 56705.5857125204. The cubic root of 3215523451 is about 1475.9916267460.

Adding to 3215523451 its reverse (1543255123), we get a palindrome (4758778574).

The spelling of 3215523451 in words is "three billion, two hundred fifteen million, five hundred twenty-three thousand, four hundred fifty-one".