31112011441 has 6 divisors (see below), whose sum is σ = 36191523570. Its totient is φ = 26667438336.

The previous prime is 31112011433. The next prime is 31112011451. The reversal of 31112011441 is 14411021113.

It can be written as a sum of positive squares in only one way, i.e., 27865291041 + 3246720400 = 166929^2 + 56980^2 .

It is not a de Polignac number, because 31112011441 - 2³ = 31112011433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31112011421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317469456 + ... + 317469553.

It is an arithmetic number, because the mean of its divisors is an integer number (6031920595).

Almost surely, 2^31112011441 is an apocalyptic number.

It is an amenable number.

31112011441 is a deficient number, since it is larger than the sum of its proper divisors (5079512129).

31112011441 is an equidigital number, since it uses as much as digits as its factorization.

31112011441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634939023 (or 634939016 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 31112011441 its reverse (14411021113), we get a palindrome (45523032554).

The spelling of 31112011441 in words is "thirty-one billion, one hundred twelve million, eleven thousand, four hundred forty-one".