31530034 has 4 divisors (see below), whose sum is σ = 47295054. Its totient is φ = 15765016.

The previous prime is 31530029. The next prime is 31530043. The reversal of 31530034 is 43003513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43003513 = 7 ⋅6143359.

It can be written as a sum of positive squares in only one way, i.e., 25755625 + 5774409 = 5075^2 + 2403^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31529993 and 31530020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7882507 + ... + 7882510.

Almost surely, 2^31530034 is an apocalyptic number.

31530034 is a deficient number, since it is larger than the sum of its proper divisors (15765020).

31530034 is a wasteful number, since it uses less digits than its factorization.

31530034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15765019.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 31530034 is about 5615.1610840652. The cubic root of 31530034 is about 315.9183213028.

Adding to 31530034 its reverse (43003513), we get a palindrome (74533547).

The spelling of 31530034 in words is "thirty-one million, five hundred thirty thousand, thirty-four".