1331439330 has 64 divisors (see below), whose sum is σ = 3525234048. Its totient is φ = 319741440.

The previous prime is 1331439311. The next prime is 1331439353. The reversal of 1331439330 is 339341331.

1331439330 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25644 + ... + 57623.

It is an arithmetic number, because the mean of its divisors is an integer number (55081782).

Almost surely, 2^1331439330 is an apocalyptic number.

1331439330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331439330 is an abundant number, since it is smaller than the sum of its proper divisors (2193794718).

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

1331439330 is a wasteful number, since it uses less digits than its factorization.

1331439330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83331.

The product of its (nonzero) digits is 8748, while the sum is 30.

The square root of 1331439330 is about 36488.8932416427. The cubic root of 1331439330 is about 1100.1210142346.

The spelling of 1331439330 in words is "one billion, three hundred thirty-one million, four hundred thirty-nine thousand, three hundred thirty".