31020320123122 has 8 divisors (see below), whose sum is σ = 50760523837872. Its totient is φ = 14100145510500.

The previous prime is 31020320123099. The next prime is 31020320123129. The reversal of 31020320123122 is 22132102302013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1410014551051 = 31020320123122 / (3 + 1 + 0 + 2 + 0 + 3 + 2 + 0 + 1 + 2 + 3 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 31020320123093 and 31020320123102.

It is not an unprimeable number, because it can be changed into a prime (31020320123129) 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, 705007275504 + ... + 705007275547.

It is an arithmetic number, because the mean of its divisors is an integer number (6345065479734).

Almost surely, 2^{31020320123122} is an apocalyptic number.

31020320123122 is a deficient number, since it is larger than the sum of its proper divisors (19740203714750).

31020320123122 is a wasteful number, since it uses less digits than its factorization.

31020320123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410014551064.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31020320123122 its reverse (22132102302013), we get a palindrome (53152422425135).

The spelling of 31020320123122 in words is "thirty-one trillion, twenty billion, three hundred twenty million, one hundred twenty-three thousand, one hundred twenty-two".