309302603472 has 80 divisors (see below), whose sum is σ = 813896210880. Its totient is φ = 101188555776.

The previous prime is 309302603471. The next prime is 309302603473. The reversal of 309302603472 is 274306203903.

It is an interprime number because it is at equal distance from previous prime (309302603471) and next prime (309302603473).

It is a self number, because there is not a number n which added to its sum of digits gives 309302603472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309302603471) 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, 1658838 + ... + 1835850.

It is an arithmetic number, because the mean of its divisors is an integer number (10173702636).

Almost surely, 2^309302603472 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 309302603472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406948105440).

309302603472 is an abundant number, since it is smaller than the sum of its proper divisors (504593607408).

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

309302603472 is a wasteful number, since it uses less digits than its factorization.

309302603472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177700 (or 177694 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 39.

The spelling of 309302603472 in words is "three hundred nine billion, three hundred two million, six hundred three thousand, four hundred seventy-two".