3213120231 has 12 divisors (see below), whose sum is σ = 4813069352. Its totient is φ = 2142079992.

The previous prime is 3213120143. The next prime is 3213120257. The reversal of 3213120231 is 1320213123.

3213120231 is a `hidden beast` number, since 321 + 312 + 0 + 2 + 31 = 666.

It is not a de Polignac number, because 3213120231 - 2¹³ = 3213112039 is a prime.

It is a super-2 number, since 2×3213120231² = 20648283237722986722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213110231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6611116 + ... + 6611601.

Almost surely, 2^3213120231 is an apocalyptic number.

3213120231 is a deficient number, since it is larger than the sum of its proper divisors (1599949121).

3213120231 is an equidigital number, since it uses as much as digits as its factorization.

3213120231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13222732 (or 13222720 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3213120231 is about 56684.3914230364. The cubic root of 3213120231 is about 1475.6238259090.

Adding to 3213120231 its reverse (1320213123), we get a palindrome (4533333354).

The spelling of 3213120231 in words is "three billion, two hundred thirteen million, one hundred twenty thousand, two hundred thirty-one".