31231111111422 has 16 divisors (see below), whose sum is σ = 62479982350992. Its totient is φ = 10407410349120.

The previous prime is 31231111111307. The next prime is 31231111111429. The reversal of 31231111111422 is 22411111113213.

It is a junction number, because it is equal to n+sod(n) for n = 31231111111392 and 31231111111401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231111111429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739982479 + ... + 740024682.

It is an arithmetic number, because the mean of its divisors is an integer number (3904998896937).

Almost surely, 2^{31231111111422} is an apocalyptic number.

31231111111422 is an abundant number, since it is smaller than the sum of its proper divisors (31248871239570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31231111111422 is a wasteful number, since it uses less digits than its factorization.

31231111111422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480010683.

The product of its digits is 288, while the sum is 24.

Adding to 31231111111422 its reverse (22411111113213), we get a palindrome (53642222224635).

The spelling of 31231111111422 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred eleven million, one hundred eleven thousand, four hundred twenty-two".