31442323011 has 32 divisors (see below), whose sum is σ = 46936454400. Its totient is φ = 18560983680.

The previous prime is 31442322979. The next prime is 31442323013. The reversal of 31442323011 is 11032324413.

It is a happy number.

It is not a de Polignac number, because 31442323011 - 2⁵ = 31442322979 is a prime.

It is a super-2 number, since 2×31442323011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31442323013) 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 31 ways as a sum of consecutive naturals, for example, 138145 + ... + 286301.

It is an arithmetic number, because the mean of its divisors is an integer number (1466764200).

Almost surely, 2^31442323011 is an apocalyptic number.

31442323011 is a deficient number, since it is larger than the sum of its proper divisors (15494131389).

31442323011 is a wasteful number, since it uses less digits than its factorization.

31442323011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148339.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31442323011 its reverse (11032324413), we get a palindrome (42474647424).

It can be divided in two parts, 31442 and 323011, that added together give a palindrome (354453).

The spelling of 31442323011 in words is "thirty-one billion, four hundred forty-two million, three hundred twenty-three thousand, eleven".