3231213131 has 8 divisors (see below), whose sum is σ = 3404382720. Its totient is φ = 3058354152.

The previous prime is 3231213101. The next prime is 3231213133. The reversal of 3231213131 is 1313121323.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3231213131 - 2¹⁰ = 3231212107 is a prime.

It is a super-2 number, since 2×3231213131² = 20881476595893646322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3231213133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56135 + ... + 98048.

It is an arithmetic number, because the mean of its divisors is an integer number (425547840).

Almost surely, 2^3231213131 is an apocalyptic number.

3231213131 is a deficient number, since it is larger than the sum of its proper divisors (173169589).

3231213131 is a wasteful number, since it uses less digits than its factorization.

3231213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155305.

The product of its digits is 324, while the sum is 20.

The square root of 3231213131 is about 56843.7607042321. The cubic root of 3231213131 is about 1478.3883617648.

Adding to 3231213131 its reverse (1313121323), we get a palindrome (4544334454).

The spelling of 3231213131 in words is "three billion, two hundred thirty-one million, two hundred thirteen thousand, one hundred thirty-one".