1251103130 has 16 divisors (see below), whose sum is σ = 2265006024. Its totient is φ = 497547840.

The previous prime is 1251103121. The next prime is 1251103157. The reversal of 1251103130 is 313011521.

It can be written as a sum of positive squares in 4 ways, for example, as 1226610529 + 24492601 = 35023^2 + 4949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1251103099 and 1251103108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359861 + ... + 363320.

Almost surely, 2^1251103130 is an apocalyptic number.

1251103130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251103130 is a deficient number, since it is larger than the sum of its proper divisors (1013902894).

1251103130 is a wasteful number, since it uses less digits than its factorization.

1251103130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723361.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 1251103130 is about 35370.9362330148. The cubic root of 1251103130 is about 1077.5341347168.

Adding to 1251103130 its reverse (313011521), we get a palindrome (1564114651).

The spelling of 1251103130 in words is "one billion, two hundred fifty-one million, one hundred three thousand, one hundred thirty".