31133134 has 16 divisors (see below), whose sum is σ = 49754880. Its totient is φ = 14568120.

The previous prime is 31133131. The next prime is 31133147. The reversal of 31133134 is 43133113.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133131) 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, 1782 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (3109680).

Almost surely, 2^31133134 is an apocalyptic number.

31133134 is a deficient number, since it is larger than the sum of its proper divisors (18621746).

31133134 is a wasteful number, since it uses less digits than its factorization.

31133134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9975.

The product of its digits is 324, while the sum is 19.

The square root of 31133134 is about 5579.7073399955. The cubic root of 31133134 is about 314.5871268386.

Adding to 31133134 its reverse (43133113), we get a palindrome (74266247).

The spelling of 31133134 in words is "thirty-one million, one hundred thirty-three thousand, one hundred thirty-four".