31320322223132 has 12 divisors (see below), whose sum is σ = 54810616328160. Its totient is φ = 15660146129376.

The previous prime is 31320322223131. The next prime is 31320322223137. The reversal of 31320322223132 is 23132222302313.

It is a junction number, because it is equal to n+sod(n) for n = 31320322223095 and 31320322223104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320322223131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1905368 + ... + 8140704.

It is an arithmetic number, because the mean of its divisors is an integer number (4567551360680).

Almost surely, 2^{31320322223132} is an apocalyptic number.

It is an amenable number.

31320322223132 is a deficient number, since it is larger than the sum of its proper divisors (23490294105028).

31320322223132 is a wasteful number, since it uses less digits than its factorization.

31320322223132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7491100 (or 7491098 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 31320322223132 its reverse (23132222302313), we get a palindrome (54452544525445).

The spelling of 31320322223132 in words is "thirty-one trillion, three hundred twenty billion, three hundred twenty-two million, two hundred twenty-three thousand, one hundred thirty-two".