1356131023 has 8 divisors (see below), whose sum is σ = 1537314800. Its totient is φ = 1185928128.

The previous prime is 1356131011. The next prime is 1356131039. The reversal of 1356131023 is 3201316531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356131023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356131323) 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 7 ways as a sum of consecutive naturals, for example, 2744958 + ... + 2745451.

It is an arithmetic number, because the mean of its divisors is an integer number (192164350).

Almost surely, 2^1356131023 is an apocalyptic number.

1356131023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1356131023 is a deficient number, since it is larger than the sum of its proper divisors (181183777).

1356131023 is a wasteful number, since it uses less digits than its factorization.

1356131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5490441.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1356131023 is about 36825.6842842058. The cubic root of 1356131023 is about 1106.8800255252.

Adding to 1356131023 its reverse (3201316531), we get a palindrome (4557447554).

The spelling of 1356131023 in words is "one billion, three hundred fifty-six million, one hundred thirty-one thousand, twenty-three".