3231131222 has 48 divisors (see below), whose sum is σ = 5773064400. Its totient is φ = 1343321280.

The previous prime is 3231131221. The next prime is 3231131237. The reversal of 3231131222 is 2221311323.

It is a junction number, because it is equal to n+sod(n) for n = 3231131194 and 3231131203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231131221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223304 + ... + 237332.

It is an arithmetic number, because the mean of its divisors is an integer number (120272175).

Almost surely, 2^3231131222 is an apocalyptic number.

3231131222 is a deficient number, since it is larger than the sum of its proper divisors (2541933178).

3231131222 is a wasteful number, since it uses less digits than its factorization.

3231131222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14109 (or 14090 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 3231131222 is about 56843.0402248156. The cubic root of 3231131222 is about 1478.3758696211.

Adding to 3231131222 its reverse (2221311323), we get a palindrome (5452442545).

The spelling of 3231131222 in words is "three billion, two hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty-two".