31162813037123 has 4 divisors (see below), whose sum is σ = 31163189832648. Its totient is φ = 31162436241600.

The previous prime is 31162813037107. The next prime is 31162813037143. The reversal of 31162813037123 is 32173031826113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31162813037123 - 2⁴ = 31162813037107 is a prime.

It is a super-2 number, since 2×31162813037123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31162813037143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188273678 + ... + 188439123.

It is an arithmetic number, because the mean of its divisors is an integer number (7790797458162).

Almost surely, 2^{31162813037123} is an apocalyptic number.

31162813037123 is a deficient number, since it is larger than the sum of its proper divisors (376795525).

31162813037123 is an equidigital number, since it uses as much as digits as its factorization.

31162813037123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376795524.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 31162813037123 in words is "thirty-one trillion, one hundred sixty-two billion, eight hundred thirteen million, thirty-seven thousand, one hundred twenty-three".