31013441 has 4 divisors (see below), whose sum is σ = 32082900. Its totient is φ = 29943984.

The previous prime is 31013431. The next prime is 31013461. The reversal of 31013441 is 14431013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21893041 + 9120400 = 4679^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 31013441 - 2²² = 26819137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31013401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534686 + ... + 534743.

It is an arithmetic number, because the mean of its divisors is an integer number (8020725).

Almost surely, 2^31013441 is an apocalyptic number.

It is an amenable number.

31013441 is a deficient number, since it is larger than the sum of its proper divisors (1069459).

31013441 is a wasteful number, since it uses less digits than its factorization.

31013441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069458.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 31013441 is about 5568.9712694536. The cubic root of 31013441 is about 314.1834600740.

Adding to 31013441 its reverse (14431013), we get a palindrome (45444454).

The spelling of 31013441 in words is "thirty-one million, thirteen thousand, four hundred forty-one".