31023110121 has 8 divisors (see below), whose sum is σ = 41475044160. Its totient is φ = 20626624752.

The previous prime is 31023110071. The next prime is 31023110227. The reversal of 31023110121 is 12101132013.

It is a happy number.

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

It is not a de Polignac number, because 31023110121 - 2⁷ = 31023109993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31023110121.

It is not an unprimeable number, because it can be changed into a prime (31023112121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13860861 + ... + 13863098.

It is an arithmetic number, because the mean of its divisors is an integer number (5184380520).

Almost surely, 2^31023110121 is an apocalyptic number.

It is an amenable number.

31023110121 is a deficient number, since it is larger than the sum of its proper divisors (10451934039).

31023110121 is a wasteful number, since it uses less digits than its factorization.

31023110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27724335.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31023110121 its reverse (12101132013), we get a palindrome (43124242134).

The spelling of 31023110121 in words is "thirty-one billion, twenty-three million, one hundred ten thousand, one hundred twenty-one".