1000103000 has 128 divisors (see below), whose sum is σ = 2653560000. Its totient is φ = 349747200.

The previous prime is 1000102973. The next prime is 1000103003. The reversal of 1000103000 is 3010001.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000103003) 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, 244976 + ... + 249024.

Almost surely, 2^1000103000 is an apocalyptic number.

1000103000 is a gapful number since it is divisible by the number (10) 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 1000103000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1326780000).

1000103000 is an abundant number, since it is smaller than the sum of its proper divisors (1653457000).

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

1000103000 is a wasteful number, since it uses less digits than its factorization.

1000103000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102 (or 4088 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 5.

The square root of 1000103000 is about 31624.4051327452. The cubic root of 1000103000 is about 1000.0343321546.

Adding to 1000103000 its reverse (3010001), we get a palindrome (1003113001).

The spelling of 1000103000 in words is "one billion, one hundred three thousand".