31868135 has 16 divisors (see below), whose sum is σ = 41343456. Its totient is φ = 23442048.

The previous prime is 31868101. The next prime is 31868171. The reversal of 31868135 is 53186813.

It is a cyclic number.

It is not a de Polignac number, because 31868135 - 2⁸ = 31867879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31868095 and 31868104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19157 + ... + 20753.

It is an arithmetic number, because the mean of its divisors is an integer number (2583966).

Almost surely, 2^31868135 is an apocalyptic number.

31868135 is a deficient number, since it is larger than the sum of its proper divisors (9475321).

31868135 is a wasteful number, since it uses less digits than its factorization.

31868135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922.

The product of its digits is 17280, while the sum is 35.

The square root of 31868135 is about 5645.1868879604. The cubic root of 31868135 is about 317.0435211769.

The spelling of 31868135 in words is "thirty-one million, eight hundred sixty-eight thousand, one hundred thirty-five".