3121431023211 has 8 divisors (see below), whose sum is σ = 4161942001104. Its totient is φ = 2080937030400.

The previous prime is 3121431023209. The next prime is 3121431023219. The reversal of 3121431023211 is 1123201341213.

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

It is not a de Polignac number, because 3121431023211 - 2¹ = 3121431023209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3121431023219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3811090 + ... + 4557111.

It is an arithmetic number, because the mean of its divisors is an integer number (520242750138).

Almost surely, 2^{3121431023211} is an apocalyptic number.

3121431023211 is a deficient number, since it is larger than the sum of its proper divisors (1040510977893).

3121431023211 is a wasteful number, since it uses less digits than its factorization.

3121431023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8492541.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 3121431023211 its reverse (1123201341213), we get a palindrome (4244632364424).

The spelling of 3121431023211 in words is "three trillion, one hundred twenty-one billion, four hundred thirty-one million, twenty-three thousand, two hundred eleven".