31122110320197 has 32 divisors (see below), whose sum is σ = 46133749702656. Its totient is φ = 18532636920000.

The previous prime is 31122110320193. The next prime is 31122110320211. The reversal of 31122110320197 is 79102301122113.

It is not a de Polignac number, because 31122110320197 - 2² = 31122110320193 is a prime.

It is a super-2 number, since 2×31122110320197² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122110320193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12762072 + ... + 15003822.

It is an arithmetic number, because the mean of its divisors is an integer number (1441679678208).

Almost surely, 2^{31122110320197} is an apocalyptic number.

It is an amenable number.

31122110320197 is a deficient number, since it is larger than the sum of its proper divisors (15011639382459).

31122110320197 is a wasteful number, since it uses less digits than its factorization.

31122110320197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253281.

The product of its (nonzero) digits is 4536, while the sum is 33.

The spelling of 31122110320197 in words is "thirty-one trillion, one hundred twenty-two billion, one hundred ten million, three hundred twenty thousand, one hundred ninety-seven".