31315034 has 4 divisors (see below), whose sum is σ = 46972554. Its totient is φ = 15657516.

The previous prime is 31315013. The next prime is 31315069. The reversal of 31315034 is 43051313.

It is a happy number.

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., 25050025 + 6265009 = 5005^2 + 2503^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31314997 and 31315015.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7828757 + ... + 7828760.

Almost surely, 2^31315034 is an apocalyptic number.

31315034 is a deficient number, since it is larger than the sum of its proper divisors (15657520).

31315034 is a wasteful number, since it uses less digits than its factorization.

31315034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15657519.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 31315034 is about 5595.9837383609. The cubic root of 31315034 is about 315.1986116239.

Adding to 31315034 its reverse (43051313), we get a palindrome (74366347).

The spelling of 31315034 in words is "thirty-one million, three hundred fifteen thousand, thirty-four".