1309500030 has 32 divisors (see below), whose sum is σ = 3145327488. Its totient is φ = 348919200.

The previous prime is 1309500019. The next prime is 1309500037. The reversal of 1309500030 is 300059031.

1309500030 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309500037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21825 + ... + 55635.

It is an arithmetic number, because the mean of its divisors is an integer number (98291484).

Almost surely, 2^1309500030 is an apocalyptic number.

1309500030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1309500030 is an abundant number, since it is smaller than the sum of its proper divisors (1835827458).

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

1309500030 is a wasteful number, since it uses less digits than its factorization.

1309500030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35112.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 1309500030 is about 36187.0146599578. The cubic root of 1309500030 is about 1094.0449628200.

Adding to 1309500030 its reverse (300059031), we get a palindrome (1609559061).

The spelling of 1309500030 in words is "one billion, three hundred nine million, five hundred thousand, thirty".