1299431430 has 64 divisors (see below), whose sum is σ = 3780172800. Its totient is φ = 315012960.

The previous prime is 1299431423. The next prime is 1299431443. The reversal of 1299431430 is 341349921.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215790 + ... + 221729.

It is an arithmetic number, because the mean of its divisors is an integer number (59065200).

Almost surely, 2^1299431430 is an apocalyptic number.

1299431430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1299431430 is an abundant number, since it is smaller than the sum of its proper divisors (2480741370).

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

1299431430 is a wasteful number, since it uses less digits than its factorization.

1299431430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437546 (or 437540 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1299431430 is about 36047.6272450768. The cubic root of 1299431430 is about 1091.2337487690.

The spelling of 1299431430 in words is "one billion, two hundred ninety-nine million, four hundred thirty-one thousand, four hundred thirty".