31121030101 has 8 divisors (see below), whose sum is σ = 36793336320. Its totient is φ = 25755335088.

The previous prime is 31121030099. The next prime is 31121030153. The reversal of 31121030101 is 10103012113.

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

It is not a de Polignac number, because 31121030101 - 2¹ = 31121030099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31121034101) 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, 76652581 + ... + 76652986.

It is an arithmetic number, because the mean of its divisors is an integer number (4599167040).

Almost surely, 2^31121030101 is an apocalyptic number.

It is an amenable number.

31121030101 is a deficient number, since it is larger than the sum of its proper divisors (5672306219).

31121030101 is a wasteful number, since it uses less digits than its factorization.

31121030101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153305603.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31121030101 its reverse (10103012113), we get a palindrome (41224042214).

The spelling of 31121030101 in words is "thirty-one billion, one hundred twenty-one million, thirty thousand, one hundred one".