31041144 has 40 divisors (see below), whose sum is σ = 86945760. Its totient is φ = 10346832.

The previous prime is 31041121. The next prime is 31041161. The reversal of 31041144 is 44114013.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23304 + ... + 24599.

It is an arithmetic number, because the mean of its divisors is an integer number (2173644).

Almost surely, 2^31041144 is an apocalyptic number.

It is an amenable number.

31041144 is an abundant number, since it is smaller than the sum of its proper divisors (55904616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31041144 is a wasteful number, since it uses less digits than its factorization.

31041144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47921 (or 47908 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 31041144 is about 5571.4579779444. The cubic root of 31041144 is about 314.2769811820.

Adding to 31041144 its reverse (44114013), we get a palindrome (75155157).

The spelling of 31041144 in words is "thirty-one million, forty-one thousand, one hundred forty-four".