3231130221031 has 2 divisors, whose sum is σ = 3231130221032. Its totient is φ = 3231130221030.

The previous prime is 3231130221029. The next prime is 3231130221037. The reversal of 3231130221031 is 1301220311323.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3231130221031 - 2¹ = 3231130221029 is a prime.

It is a super-2 number, since 2×3231130221031² (a number of 26 digits) contains 22 as substring.

Together with 3231130221029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3231130220993 and 3231130221011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3231130221037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615565110515 + 1615565110516.

It is an arithmetic number, because the mean of its divisors is an integer number (1615565110516).

Almost surely, 2^{3231130221031} is an apocalyptic number.

3231130221031 is a deficient number, since it is larger than the sum of its proper divisors (1).

3231130221031 is an equidigital number, since it uses as much as digits as its factorization.

3231130221031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 3231130221031 its reverse (1301220311323), we get a palindrome (4532350532354).

The spelling of 3231130221031 in words is "three trillion, two hundred thirty-one billion, one hundred thirty million, two hundred twenty-one thousand, thirty-one".