31012231011 has 8 divisors (see below), whose sum is σ = 43781973264. Its totient is φ = 19458654720.

The previous prime is 31012231009. The next prime is 31012231021. The reversal of 31012231011 is 11013221013.

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 31012231011 - 2¹ = 31012231009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31012231021) 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, 304041430 + ... + 304041531.

It is an arithmetic number, because the mean of its divisors is an integer number (5472746658).

Almost surely, 2^31012231011 is an apocalyptic number.

31012231011 is a deficient number, since it is larger than the sum of its proper divisors (12769742253).

31012231011 is a wasteful number, since it uses less digits than its factorization.

31012231011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608082981.

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

Adding to 31012231011 its reverse (11013221013), we get a palindrome (42025452024).

The spelling of 31012231011 in words is "thirty-one billion, twelve million, two hundred thirty-one thousand, eleven".