1002312100 has 36 divisors (see below), whose sum is σ = 2176399764. Its totient is φ = 400670080.

The previous prime is 1002312053. The next prime is 1002312127. The reversal of 1002312100 is 12132001.

It can be written as a sum of positive squares in 6 ways, for example, as 70963776 + 931348324 = 8424^2 + 30518^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281934 + ... + 285466.

It is an arithmetic number, because the mean of its divisors is an integer number (60455549).

Almost surely, 2^1002312100 is an apocalyptic number.

1002312100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002312100 is an abundant number, since it is smaller than the sum of its proper divisors (1174087664).

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

1002312100 is a wasteful number, since it uses less digits than its factorization.

1002312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6384 (or 6377 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1002312100 is about 31659.3130058124. The cubic root of 1002312100 is about 1000.7701067833.

Adding to 1002312100 its reverse (12132001), we get a palindrome (1014444101).

The spelling of 1002312100 in words is "one billion, two million, three hundred twelve thousand, one hundred".