3213505403 has 4 divisors (see below), whose sum is σ = 3215765088. Its totient is φ = 3211245720.

The previous prime is 3213505367. The next prime is 3213505411. The reversal of 3213505403 is 3045053123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3213505403 - 2²² = 3209311099 is a prime.

It is a super-2 number, since 2×3213505403² = 20653233950220384818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3213505433) 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, 1127708 + ... + 1130553.

It is an arithmetic number, because the mean of its divisors is an integer number (803941272).

Almost surely, 2^3213505403 is an apocalyptic number.

3213505403 is a deficient number, since it is larger than the sum of its proper divisors (2259685).

3213505403 is a wasteful number, since it uses less digits than its factorization.

3213505403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259684.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 3213505403 is about 56687.7888349863. The cubic root of 3213505403 is about 1475.6827869012.

Adding to 3213505403 its reverse (3045053123), we get a palindrome (6258558526).

The spelling of 3213505403 in words is "three billion, two hundred thirteen million, five hundred five thousand, four hundred three".