1285308130 has 16 divisors (see below), whose sum is σ = 2393332920. Its totient is φ = 496394752.

The previous prime is 1285308091. The next prime is 1285308131. The reversal of 1285308130 is 318035821.

It can be written as a sum of positive squares in 4 ways, for example, as 1165471321 + 119836809 = 34139^2 + 10947^2 .

It is a super-3 number, since 3×1285308130³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1285308092 and 1285308101.

It is not an unprimeable number, because it can be changed into a prime (1285308131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215759 + ... + 2216338.

Almost surely, 2^1285308130 is an apocalyptic number.

1285308130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1285308130 is a deficient number, since it is larger than the sum of its proper divisors (1108024790).

1285308130 is a wasteful number, since it uses less digits than its factorization.

1285308130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4432133.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1285308130 is about 35851.1942618374. The cubic root of 1285308130 is about 1087.2658601933.

The spelling of 1285308130 in words is "one billion, two hundred eighty-five million, three hundred eight thousand, one hundred thirty".