31345534 has 12 divisors (see below), whose sum is σ = 51681672. Its totient is φ = 14247860.

The previous prime is 31345529. The next prime is 31345537. The reversal of 31345534 is 43554313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31345537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64522 + ... + 65005.

It is an arithmetic number, because the mean of its divisors is an integer number (4306806).

Almost surely, 2^31345534 is an apocalyptic number.

31345534 is a deficient number, since it is larger than the sum of its proper divisors (20336138).

31345534 is a wasteful number, since it uses less digits than its factorization.

31345534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129551 (or 129540 counting only the distinct ones).

The product of its digits is 10800, while the sum is 28.

The square root of 31345534 is about 5598.7082438720. The cubic root of 31345534 is about 315.3009100729.

Adding to 31345534 its reverse (43554313), we get a palindrome (74899847).

It can be divided in two parts, 3134 and 5534, that added together give a palindrome (8668).

The spelling of 31345534 in words is "thirty-one million, three hundred forty-five thousand, five hundred thirty-four".