31113441 has 6 divisors (see below), whose sum is σ = 44941650. Its totient is φ = 20742288.

The previous prime is 31113413. The next prime is 31113443. The reversal of 31113441 is 14431113.

It can be written as a sum of positive squares in only one way, i.e., 19580625 + 11532816 = 4425^2 + 3396^2 .

It is not a de Polignac number, because 31113441 - 2⁵ = 31113409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113443) 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, 1728516 + ... + 1728533.

It is an arithmetic number, because the mean of its divisors is an integer number (7490275).

Almost surely, 2^31113441 is an apocalyptic number.

It is an amenable number.

31113441 is a deficient number, since it is larger than the sum of its proper divisors (13828209).

31113441 is a wasteful number, since it uses less digits than its factorization.

31113441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457055 (or 3457052 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 31113441 is about 5577.9423625563. The cubic root of 31113441 is about 314.5207830414.

Adding to 31113441 its reverse (14431113), we get a palindrome (45544554).

The spelling of 31113441 in words is "thirty-one million, one hundred thirteen thousand, four hundred forty-one".