2117331154 has 4 divisors (see below), whose sum is σ = 3175996734. Its totient is φ = 1058665576.

The previous prime is 2117331149. The next prime is 2117331157. The reversal of 2117331154 is 4511337112.

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

It can be written as a sum of positive squares in only one way, i.e., 1929229929 + 188101225 = 43923^2 + 13715^2 .

It is not an unprimeable number, because it can be changed into a prime (2117331157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529332787 + ... + 529332790.

Almost surely, 2^2117331154 is an apocalyptic number.

2117331154 is a deficient number, since it is larger than the sum of its proper divisors (1058665580).

2117331154 is a wasteful number, since it uses less digits than its factorization.

2117331154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058665579.

The product of its digits is 2520, while the sum is 28.

The square root of 2117331154 is about 46014.4667903476. The cubic root of 2117331154 is about 1284.0923615234.

Adding to 2117331154 its reverse (4511337112), we get a palindrome (6628668266).

The spelling of 2117331154 in words is "two billion, one hundred seventeen million, three hundred thirty-one thousand, one hundred fifty-four".