103023021312 has 90 divisors (see below), whose sum is σ = 307196070258. Its totient is φ = 34341000192.

The previous prime is 103023021271. The next prime is 103023021317. The reversal of 103023021312 is 213120320301.

103023021312 is a `hidden beast` number, since 1 + 0 + 302 + 30 + 21 + 312 = 666.

It can be written as a sum of positive squares in only one way, i.e., 69366917376 + 33656103936 = 263376^2 + 183456^2 .

It is a super-2 number, since 2×103023021312² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103023021317) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2463423 + ... + 2504894.

Almost surely, 2^103023021312 is an apocalyptic number.

103023021312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

103023021312 is an abundant number, since it is smaller than the sum of its proper divisors (204173048946).

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

103023021312 is an frugal number, since it uses more digits than its factorization.

103023021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968345 (or 4968322 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 103023021312 its reverse (213120320301), we get a palindrome (316143341613).

The spelling of 103023021312 in words is "one hundred three billion, twenty-three million, twenty-one thousand, three hundred twelve".