31121034 has 32 divisors (see below), whose sum is σ = 71625600. Its totient is φ = 8830272.

The previous prime is 31121021. The next prime is 31121039. The reversal of 31121034 is 43012113.

It is not an unprimeable number, because it can be changed into a prime (31121039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3772 + ... + 8744.

It is an arithmetic number, because the mean of its divisors is an integer number (2238300).

Almost surely, 2^31121034 is an apocalyptic number.

31121034 is an abundant number, since it is smaller than the sum of its proper divisors (40504566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31121034 is a wasteful number, since it uses less digits than its factorization.

31121034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 31121034 is about 5578.6229483628. The cubic root of 31121034 is about 314.5463664333.

Adding to 31121034 its reverse (43012113), we get a palindrome (74133147).

The spelling of 31121034 in words is "thirty-one million, one hundred twenty-one thousand, thirty-four".