1352131409 has 16 divisors (see below), whose sum is σ = 1475088000. Its totient is φ = 1234517760.

The previous prime is 1352131399. The next prime is 1352131411. The reversal of 1352131409 is 9041312531.

It is a cyclic number.

It is not a de Polignac number, because 1352131409 - 2²⁴ = 1335354193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1352131709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345737 + ... + 349625.

It is an arithmetic number, because the mean of its divisors is an integer number (92193000).

Almost surely, 2^1352131409 is an apocalyptic number.

1352131409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1352131409 is a deficient number, since it is larger than the sum of its proper divisors (122956591).

1352131409 is a wasteful number, since it uses less digits than its factorization.

1352131409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1352131409 is about 36771.3395051091. The cubic root of 1352131409 is about 1105.7907865638.

The spelling of 1352131409 in words is "one billion, three hundred fifty-two million, one hundred thirty-one thousand, four hundred nine".