2131031311222 has 32 divisors (see below), whose sum is σ = 3611740816800. Its totient is φ = 934120454400.

The previous prime is 2131031311177. The next prime is 2131031311247. The reversal of 2131031311222 is 2221131301312.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2131031311193 and 2131031311202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1485679 + ... + 2543482.

It is an arithmetic number, because the mean of its divisors is an integer number (112866900525).

Almost surely, 2^{2131031311222} is an apocalyptic number.

2131031311222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2131031311222 is a deficient number, since it is larger than the sum of its proper divisors (1480709505578).

2131031311222 is a wasteful number, since it uses less digits than its factorization.

2131031311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030032.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2131031311222 its reverse (2221131301312), we get a palindrome (4352162612534).

The spelling of 2131031311222 in words is "two trillion, one hundred thirty-one billion, thirty-one million, three hundred eleven thousand, two hundred twenty-two".