1331188430 has 64 divisors (see below), whose sum is σ = 2820883968. Its totient is φ = 445906560.

The previous prime is 1331188427. The next prime is 1331188433. The reversal of 1331188430 is 348811331.

It is an interprime number because it is at equal distance from previous prime (1331188427) and next prime (1331188433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331188433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1353719 + ... + 1354701.

It is an arithmetic number, because the mean of its divisors is an integer number (44076312).

Almost surely, 2^1331188430 is an apocalyptic number.

1331188430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331188430 is an abundant number, since it is smaller than the sum of its proper divisors (1489695538).

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

1331188430 is a wasteful number, since it uses less digits than its factorization.

1331188430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1331188430 is about 36485.4550471828. The cubic root of 1331188430 is about 1100.0519066415.

Adding to 1331188430 its reverse (348811331), we get a palindrome (1679999761).

The spelling of 1331188430 in words is "one billion, three hundred thirty-one million, one hundred eighty-eight thousand, four hundred thirty".