31313441 has 8 divisors (see below), whose sum is σ = 32527104. Its totient is φ = 30112560.

The previous prime is 31313389. The next prime is 31313453. The reversal of 31313441 is 14431313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31313441 - 2⁶ = 31313377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31313041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955 + ... + 8151.

It is an arithmetic number, because the mean of its divisors is an integer number (4065888).

Almost surely, 2^31313441 is an apocalyptic number.

31313441 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31313441 is a deficient number, since it is larger than the sum of its proper divisors (1213663).

31313441 is a wasteful number, since it uses less digits than its factorization.

31313441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391.

The product of its digits is 432, while the sum is 20.

The square root of 31313441 is about 5595.8414023273. The cubic root of 31313441 is about 315.1932668013.

Adding to 31313441 its reverse (14431313), we get a palindrome (45744754).

The spelling of 31313441 in words is "thirty-one million, three hundred thirteen thousand, four hundred forty-one".