31401101322 has 24 divisors (see below), whose sum is σ = 68062572864. Its totient is φ = 10462902504.

The previous prime is 31401101311. The next prime is 31401101323. The reversal of 31401101322 is 22310110413.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31401101295 and 31401101304.

It is not an unprimeable number, because it can be changed into a prime (31401101323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297228 + ... + 388775.

It is an arithmetic number, because the mean of its divisors is an integer number (2835940536).

Almost surely, 2^31401101322 is an apocalyptic number.

31401101322 is an abundant number, since it is smaller than the sum of its proper divisors (36661471542).

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

31401101322 is a wasteful number, since it uses less digits than its factorization.

31401101322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688554 (or 688551 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31401101322 its reverse (22310110413), we get a palindrome (53711211735).

Subtracting from 31401101322 its reverse (22310110413), we obtain a palindrome (9090990909).

The spelling of 31401101322 in words is "thirty-one billion, four hundred one million, one hundred one thousand, three hundred twenty-two".