216313157 has 4 divisors (see below), whose sum is σ = 227698080. Its totient is φ = 204928236.

The previous prime is 216313127. The next prime is 216313217. The reversal of 216313157 is 751313612.

216313157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 216313157 - 2⁶ = 216313093 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 (216313127) 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, 5692433 + ... + 5692470.

It is an arithmetic number, because the mean of its divisors is an integer number (56924520).

Almost surely, 2^216313157 is an apocalyptic number.

It is an amenable number.

216313157 is a deficient number, since it is larger than the sum of its proper divisors (11384923).

216313157 is a wasteful number, since it uses less digits than its factorization.

216313157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11384922.

The product of its digits is 3780, while the sum is 29.

The square root of 216313157 is about 14707.5884155085. The cubic root of 216313157 is about 600.2898201698.

Adding to 216313157 its reverse (751313612), we get a palindrome (967626769).

The spelling of 216313157 in words is "two hundred sixteen million, three hundred thirteen thousand, one hundred fifty-seven".