105312505530 has 64 divisors (see below), whose sum is σ = 256830582528. Its totient is φ = 27633415680.

The previous prime is 105312505523. The next prime is 105312505549. The reversal of 105312505530 is 35505213501.

It is a super-2 number, since 2×105312505530² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 376590 + ... + 593670.

It is an arithmetic number, because the mean of its divisors is an integer number (4012977852).

Almost surely, 2^105312505530 is an apocalyptic number.

105312505530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105312505530 is an abundant number, since it is smaller than the sum of its proper divisors (151518076998).

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

105312505530 is a wasteful number, since it uses less digits than its factorization.

105312505530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217351.

The product of its (nonzero) digits is 11250, while the sum is 30.

The spelling of 105312505530 in words is "one hundred five billion, three hundred twelve million, five hundred five thousand, five hundred thirty".