34520213531 has 8 divisors (see below), whose sum is σ = 34570617840. Its totient is φ = 34469836128.

The previous prime is 34520213477. The next prime is 34520213551. The reversal of 34520213531 is 13531202543.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 34520213531 - 2⁶ = 34520213467 is a prime.

It is a super-2 number, since 2×34520213531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 34520213494 and 34520213503.

It is not an unprimeable number, because it can be changed into a prime (34520213551) 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, 5142005 + ... + 5148713.

It is an arithmetic number, because the mean of its divisors is an integer number (4321327230).

Almost surely, 2^34520213531 is an apocalyptic number.

34520213531 is a deficient number, since it is larger than the sum of its proper divisors (50404309).

34520213531 is an equidigital number, since it uses as much as digits as its factorization.

34520213531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13453.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 34520213531 in words is "thirty-four billion, five hundred twenty million, two hundred thirteen thousand, five hundred thirty-one".