31063641 has 16 divisors (see below), whose sum is σ = 50120064. Its totient is φ = 16706304.

The previous prime is 31063633. The next prime is 31063657. The reversal of 31063641 is 14636013.

It is not a de Polignac number, because 31063641 - 2³ = 31063633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31063601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43150 + ... + 43863.

It is an arithmetic number, because the mean of its divisors is an integer number (3132504).

Almost surely, 2^31063641 is an apocalyptic number.

It is an amenable number.

31063641 is a deficient number, since it is larger than the sum of its proper divisors (19056423).

31063641 is a wasteful number, since it uses less digits than its factorization.

31063641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87040.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 31063641 is about 5573.4765631516. The cubic root of 31063641 is about 314.3528866949.

Adding to 31063641 its reverse (14636013), we get a palindrome (45699654).

The spelling of 31063641 in words is "thirty-one million, sixty-three thousand, six hundred forty-one".