1309204030 has 16 divisors (see below), whose sum is σ = 2358134064. Its totient is φ = 523333440.

The previous prime is 1309203979. The next prime is 1309204073. The reversal of 1309204030 is 304029031.

It is a junction number, because it is equal to n+sod(n) for n = 1309203992 and 1309204010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27447 + ... + 58066.

It is an arithmetic number, because the mean of its divisors is an integer number (147383379).

Almost surely, 2^1309204030 is an apocalyptic number.

1309204030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1309204030 is a deficient number, since it is larger than the sum of its proper divisors (1048930034).

1309204030 is a wasteful number, since it uses less digits than its factorization.

1309204030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87051.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1309204030 is about 36182.9245639431. The cubic root of 1309204030 is about 1093.9625237962.

The spelling of 1309204030 in words is "one billion, three hundred nine million, two hundred four thousand, thirty".