305412223512 has 64 divisors (see below), whose sum is σ = 833007888000. Its totient is φ = 92541885440.

The previous prime is 305412223483. The next prime is 305412223547. The reversal of 305412223512 is 215322214503.

It is a super-2 number, since 2×305412223512² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 305412223512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4001128 + ... + 4076744.

It is an arithmetic number, because the mean of its divisors is an integer number (13015748250).

Almost surely, 2^305412223512 is an apocalyptic number.

It is an amenable number.

305412223512 is an abundant number, since it is smaller than the sum of its proper divisors (527595664488).

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

305412223512 is a wasteful number, since it uses less digits than its factorization.

305412223512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90936 (or 90932 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Subtracting from 305412223512 its reverse (215322214503), we obtain a palindrome (90090009009).

The spelling of 305412223512 in words is "three hundred five billion, four hundred twelve million, two hundred twenty-three thousand, five hundred twelve".