31216034 has 4 divisors (see below), whose sum is σ = 46824054. Its totient is φ = 15608016.

The previous prime is 31216021. The next prime is 31216043. The reversal of 31216034 is 43061213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 3073009 = 5305^2 + 1753^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31215997 and 31216015.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7804007 + ... + 7804010.

Almost surely, 2^31216034 is an apocalyptic number.

31216034 is a deficient number, since it is larger than the sum of its proper divisors (15608020).

31216034 is a wasteful number, since it uses less digits than its factorization.

31216034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15608019.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 31216034 is about 5587.1311063908. The cubic root of 31216034 is about 314.8661024941.

Adding to 31216034 its reverse (43061213), we get a palindrome (74277247).

The spelling of 31216034 in words is "thirty-one million, two hundred sixteen thousand, thirty-four".