34312520 has 32 divisors (see below), whose sum is σ = 84222720. Its totient is φ = 12477120.

The previous prime is 34312519. The next prime is 34312529. The reversal of 34312520 is 2521343.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 34312492 and 34312501.

It is not an unprimeable number, because it can be changed into a prime (34312529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38552 + ... + 39431.

It is an arithmetic number, because the mean of its divisors is an integer number (2631960).

Almost surely, 2^34312520 is an apocalyptic number.

It is an amenable number.

34312520 is an abundant number, since it is smaller than the sum of its proper divisors (49910200).

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

34312520 is a wasteful number, since it uses less digits than its factorization.

34312520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78005 (or 78001 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 34312520 is about 5857.6889640881. The cubic root of 34312520 is about 324.9507459876.

Adding to 34312520 its reverse (2521343), we get a palindrome (36833863).

The spelling of 34312520 in words is "thirty-four million, three hundred twelve thousand, five hundred twenty".