31240444011 has 16 divisors (see below), whose sum is σ = 47658795264. Its totient is φ = 17831316384.

The previous prime is 31240444007. The next prime is 31240444013. The reversal of 31240444011 is 11044404213.

It is not a de Polignac number, because 31240444011 - 2² = 31240444007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31240444013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829725 + ... + 866558.

It is an arithmetic number, because the mean of its divisors is an integer number (2978674704).

Almost surely, 2^31240444011 is an apocalyptic number.

31240444011 is a deficient number, since it is larger than the sum of its proper divisors (16418351253).

31240444011 is a wasteful number, since it uses less digits than its factorization.

31240444011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697170.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 31240444011 its reverse (11044404213), we get a palindrome (42284848224).

It can be divided in two parts, 31 and 240444011, that added together give a palindrome (240444042).

The spelling of 31240444011 in words is "thirty-one billion, two hundred forty million, four hundred forty-four thousand, eleven".