3123220211031 has 16 divisors (see below), whose sum is σ = 4492445501664. Its totient is φ = 1922692721664.

The previous prime is 3123220210993. The next prime is 3123220211081. The reversal of 3123220211031 is 1301120223213.

It is not a de Polignac number, because 3123220211031 - 2¹⁸ = 3123219948887 is a prime.

It is a super-2 number, since 2×3123220211031² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3123220210989 and 3123220211007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123220211081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577729486 + ... + 577734891.

It is an arithmetic number, because the mean of its divisors is an integer number (280777843854).

Almost surely, 2^{3123220211031} is an apocalyptic number.

3123220211031 is a deficient number, since it is larger than the sum of its proper divisors (1369225290633).

3123220211031 is a wasteful number, since it uses less digits than its factorization.

3123220211031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155464450.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 3123220211031 its reverse (1301120223213), we get a palindrome (4424340434244).

The spelling of 3123220211031 in words is "three trillion, one hundred twenty-three billion, two hundred twenty million, two hundred eleven thousand, thirty-one".