103212313512 has 128 divisors (see below), whose sum is σ = 322624512000. Its totient is φ = 26731411200.

The previous prime is 103212313507. The next prime is 103212313517. The reversal of 103212313512 is 215313212301.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (103212313507) and next prime (103212313517).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (103212313517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564937 + ... + 724967.

It is an arithmetic number, because the mean of its divisors is an integer number (2520504000).

Almost surely, 2^103212313512 is an apocalyptic number.

103212313512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103212313512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161312256000).

103212313512 is an abundant number, since it is smaller than the sum of its proper divisors (219412198488).

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

103212313512 is a wasteful number, since it uses less digits than its factorization.

103212313512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160407 (or 160403 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 103212313512 its reverse (215313212301), we get a palindrome (318525525813).

The spelling of 103212313512 in words is "one hundred three billion, two hundred twelve million, three hundred thirteen thousand, five hundred twelve".