308209697052 has 96 divisors (see below), whose sum is σ = 777207674880. Its totient is φ = 94837290240.

The previous prime is 308209697027. The next prime is 308209697069. The reversal of 308209697052 is 250796902803.

It is a junction number, because it is equal to n+sod(n) for n = 308209696986 and 308209697004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 723298 + ... + 1067510.

It is an arithmetic number, because the mean of its divisors is an integer number (8095913280).

Almost surely, 2^308209697052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308209697052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388603837440).

308209697052 is an abundant number, since it is smaller than the sum of its proper divisors (468997977828).

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

308209697052 is a wasteful number, since it uses less digits than its factorization.

308209697052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344363 (or 344361 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 308209697052 in words is "three hundred eight billion, two hundred nine million, six hundred ninety-seven thousand, fifty-two".