312103000 has 128 divisors (see below), whose sum is σ = 844084800. Its totient is φ = 106752000.

The previous prime is 312102961. The next prime is 312103003. The reversal of 312103000 is 301213.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312103003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186166 + ... + 187834.

Almost surely, 2^312103000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312103000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422042400).

312103000 is an abundant number, since it is smaller than the sum of its proper divisors (531981800).

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

312103000 is a wasteful number, since it uses less digits than its factorization.

312103000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718 (or 1704 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 312103000 is about 17666.4371054268. The cubic root of 312103000 is about 678.3169160277.

Adding to 312103000 its reverse (301213), we get a palindrome (312404213).

The spelling of 312103000 in words is "three hundred twelve million, one hundred three thousand".