1340013131 has 4 divisors (see below), whose sum is σ = 1341817392. Its totient is φ = 1338208872.

The previous prime is 1340013091. The next prime is 1340013139. The reversal of 1340013131 is 1313100431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1340013131 - 2⁶ = 1340013067 is a prime.

It is a super-2 number, since 2×1340013131² = 3591270382504846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340013139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901016 + ... + 902501.

It is an arithmetic number, because the mean of its divisors is an integer number (335454348).

Almost surely, 2^1340013131 is an apocalyptic number.

1340013131 is a deficient number, since it is larger than the sum of its proper divisors (1804261).

1340013131 is an equidigital number, since it uses as much as digits as its factorization.

1340013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804260.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1340013131 is about 36606.1897907990. The cubic root of 1340013131 is about 1102.4773725780.

Adding to 1340013131 its reverse (1313100431), we get a palindrome (2653113562).

The spelling of 1340013131 in words is "one billion, three hundred forty million, thirteen thousand, one hundred thirty-one".