31042663 has 8 divisors (see below), whose sum is σ = 34298208. Its totient is φ = 27945984.

The previous prime is 31042651. The next prime is 31042681. The reversal of 31042663 is 36624013.

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 31042663 - 2⁵ = 31042631 is a prime.

It is a super-2 number, since 2×31042663² = 1927293852263138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31042633) 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, 39306 + ... + 40087.

It is an arithmetic number, because the mean of its divisors is an integer number (4287276).

Almost surely, 2^31042663 is an apocalyptic number.

31042663 is a deficient number, since it is larger than the sum of its proper divisors (3255545).

31042663 is a wasteful number, since it uses less digits than its factorization.

31042663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79433.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 31042663 is about 5571.5942960700. The cubic root of 31042663 is about 314.2821074852.

Adding to 31042663 its reverse (36624013), we get a palindrome (67666676).

The spelling of 31042663 in words is "thirty-one million, forty-two thousand, six hundred sixty-three".