3213131232 has 48 divisors (see below), whose sum is σ = 8437882320. Its totient is φ = 1070610432.

The previous prime is 3213131203. The next prime is 3213131237. The reversal of 3213131232 is 2321313123.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3213131199 and 3213131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213131237) 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, 307144 + ... + 317432.

It is an arithmetic number, because the mean of its divisors is an integer number (175789215).

Almost surely, 2^3213131232 is an apocalyptic number.

3213131232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3213131232 is an abundant number, since it is smaller than the sum of its proper divisors (5224751088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3213131232 is a wasteful number, since it uses less digits than its factorization.

3213131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13555 (or 13547 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 3213131232 is about 56684.4884602481. The cubic root of 3213131232 is about 1475.6255099749.

Adding to 3213131232 its reverse (2321313123), we get a palindrome (5534444355).

It can be divided in two parts, 321313123 and 2, that multiplied together give a palindrome (642626246).

The spelling of 3213131232 in words is "three billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred thirty-two".