3235213521 has 8 divisors (see below), whose sum is σ = 4792908960. Its totient is φ = 2156808996.

The previous prime is 3235213481. The next prime is 3235213561. The reversal of 3235213521 is 1253125323.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3235213481) and next prime (3235213561).

It is a de Polignac number, because none of the positive numbers 2^k-3235213521 is a prime.

It is a super-2 number, since 2×3235213521² = 20933213052922434882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 119822723 = 3235213521 / (3 + 2 + 3 + 5 + 2 + 1 + 3 + 5 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (3235213561) 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, 59911335 + ... + 59911388.

It is an arithmetic number, because the mean of its divisors is an integer number (599113620).

Almost surely, 2^3235213521 is an apocalyptic number.

It is an amenable number.

3235213521 is a deficient number, since it is larger than the sum of its proper divisors (1557695439).

3235213521 is a wasteful number, since it uses less digits than its factorization.

3235213521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119822732 (or 119822726 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 3235213521 is about 56878.9374109608. The cubic root of 3235213521 is about 1478.9982143497.

Adding to 3235213521 its reverse (1253125323), we get a palindrome (4488338844).

The spelling of 3235213521 in words is "three billion, two hundred thirty-five million, two hundred thirteen thousand, five hundred twenty-one".