31861063 has 6 divisors (see below), whose sum is σ = 34500624. Its totient is φ = 29410056.

The previous prime is 31861031. The next prime is 31861079. The reversal of 31861063 is 36016813.

It is not a de Polignac number, because 31861063 - 2⁵ = 31861031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31861013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94095 + ... + 94432.

It is an arithmetic number, because the mean of its divisors is an integer number (5750104).

Almost surely, 2^31861063 is an apocalyptic number.

31861063 is a deficient number, since it is larger than the sum of its proper divisors (2639561).

31861063 is a wasteful number, since it uses less digits than its factorization.

31861063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188553 (or 188540 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 31861063 is about 5644.5604789036. The cubic root of 31861063 is about 317.0200672612.

Adding to 31861063 its reverse (36016813), we get a palindrome (67877876).

The spelling of 31861063 in words is "thirty-one million, eight hundred sixty-one thousand, sixty-three".