1331213429 has 24 divisors (see below), whose sum is σ = 1683345888. Its totient is φ = 1043370720.

The previous prime is 1331213423. The next prime is 1331213453. The reversal of 1331213429 is 9243121331.

It is not a de Polignac number, because 1331213429 - 2⁸ = 1331213173 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331213423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58394 + ... + 77924.

It is an arithmetic number, because the mean of its divisors is an integer number (70139412).

Almost surely, 2^1331213429 is an apocalyptic number.

It is an amenable number.

1331213429 is a deficient number, since it is larger than the sum of its proper divisors (352132459).

1331213429 is a wasteful number, since it uses less digits than its factorization.

1331213429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19665 (or 19658 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 1331213429 is about 36485.7976341480. The cubic root of 1331213429 is about 1100.0587927254.

The spelling of 1331213429 in words is "one billion, three hundred thirty-one million, two hundred thirteen thousand, four hundred twenty-nine".