1261308130 has 32 divisors (see below), whose sum is σ = 2300223744. Its totient is φ = 497919936.

The previous prime is 1261308091. The next prime is 1261308131. The reversal of 1261308130 is 318031621.

It is a super-3 number, since 3×1261308130³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1261308095 and 1261308104.

It is not an unprimeable number, because it can be changed into a prime (1261308131) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 324579 + ... + 328441.

It is an arithmetic number, because the mean of its divisors is an integer number (71881992).

Almost surely, 2^1261308130 is an apocalyptic number.

1261308130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1261308130 is a deficient number, since it is larger than the sum of its proper divisors (1038915614).

1261308130 is a wasteful number, since it uses less digits than its factorization.

1261308130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1261308130 is about 35514.9001124880. The cubic root of 1261308130 is about 1080.4559488865.

Adding to 1261308130 its reverse (318031621), we get a palindrome (1579339751).

The spelling of 1261308130 in words is "one billion, two hundred sixty-one million, three hundred eight thousand, one hundred thirty".