31230012111 has 8 divisors (see below), whose sum is σ = 42167105280. Its totient is φ = 20556463512.

The previous prime is 31230012049. The next prime is 31230012113. The reversal of 31230012111 is 11121003213.

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 31230012111 - 2¹³ = 31230003919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230012113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65885865 + ... + 65886338.

It is an arithmetic number, because the mean of its divisors is an integer number (5270888160).

Almost surely, 2^31230012111 is an apocalyptic number.

31230012111 is a deficient number, since it is larger than the sum of its proper divisors (10937093169).

31230012111 is a wasteful number, since it uses less digits than its factorization.

31230012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131772285.

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

Adding to 31230012111 its reverse (11121003213), we get a palindrome (42351015324).

The spelling of 31230012111 in words is "thirty-one billion, two hundred thirty million, twelve thousand, one hundred eleven".