103011312 has 40 divisors (see below), whose sum is σ = 280120960. Its totient is φ = 32529600.

The previous prime is 103011301. The next prime is 103011317. The reversal of 103011312 is 213110301.

It is a super-2 number, since 2×103011312² = 21222660799922688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103011317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55564 + ... + 57387.

It is an arithmetic number, because the mean of its divisors is an integer number (7003024).

Almost surely, 2^103011312 is an apocalyptic number.

103011312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

103011312 is an abundant number, since it is smaller than the sum of its proper divisors (177109648).

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

103011312 is a wasteful number, since it uses less digits than its factorization.

103011312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112981 (or 112975 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 103011312 is about 10149.4488520313. The cubic root of 103011312 is about 468.7719745076.

Adding to 103011312 its reverse (213110301), we get a palindrome (316121613).

The spelling of 103011312 in words is "one hundred three million, eleven thousand, three hundred twelve".