31123034 has 4 divisors (see below), whose sum is σ = 46684554. Its totient is φ = 15561516.

The previous prime is 31123021. The next prime is 31123067. The reversal of 31123034 is 43032113.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43032113 = 73 ⋅589481.

It can be written as a sum of positive squares in only one way, i.e., 17247409 + 13875625 = 4153^2 + 3725^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7780757 + ... + 7780760.

Almost surely, 2^31123034 is an apocalyptic number.

31123034 is a deficient number, since it is larger than the sum of its proper divisors (15561520).

31123034 is a wasteful number, since it uses less digits than its factorization.

31123034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15561519.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 31123034 is about 5578.8022011898. The cubic root of 31123034 is about 314.5531044191.

Adding to 31123034 its reverse (43032113), we get a palindrome (74155147).

The spelling of 31123034 in words is "thirty-one million, one hundred twenty-three thousand, thirty-four".