156542313 has 4 divisors (see below), whose sum is σ = 208723088. Its totient is φ = 104361540.

The previous prime is 156542303. The next prime is 156542327. The reversal of 156542313 is 313245651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313245651 = 3 ⋅104415217.

It is not a de Polignac number, because 156542313 - 2¹⁶ = 156476777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156542303) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26090383 + ... + 26090388.

It is an arithmetic number, because the mean of its divisors is an integer number (52180772).

Almost surely, 2^156542313 is an apocalyptic number.

It is an amenable number.

156542313 is a deficient number, since it is larger than the sum of its proper divisors (52180775).

156542313 is an equidigital number, since it uses as much as digits as its factorization.

156542313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52180774.

The product of its digits is 10800, while the sum is 30.

The square root of 156542313 is about 12511.6870565084. The cubic root of 156542313 is about 538.9443402149.

Adding to 156542313 its reverse (313245651), we get a palindrome (469787964).

The spelling of 156542313 in words is "one hundred fifty-six million, five hundred forty-two thousand, three hundred thirteen".