31663134 has 24 divisors (see below), whose sum is σ = 71587152. Its totient is φ = 10095360.

The previous prime is 31663133. The next prime is 31663147. The reversal of 31663134 is 43136613.

31663134 = 2812² + 2813² + ... + 2815².

It is a junction number, because it is equal to n+sod(n) for n = 31663098 and 31663107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31663133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37827 + ... + 38654.

It is an arithmetic number, because the mean of its divisors is an integer number (2982798).

Almost surely, 2^31663134 is an apocalyptic number.

31663134 is an abundant number, since it is smaller than the sum of its proper divisors (39924018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31663134 is a wasteful number, since it uses less digits than its factorization.

31663134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76512 (or 76509 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 31663134 is about 5627.0004442865. Note that the first 3 decimals coincide. The cubic root of 31663134 is about 316.3622334911.

Adding to 31663134 its reverse (43136613), we get a palindrome (74799747).

The spelling of 31663134 in words is "thirty-one million, six hundred sixty-three thousand, one hundred thirty-four".