242013311 has 4 divisors (see below), whose sum is σ = 249820224. Its totient is φ = 234206400.

The previous prime is 242013307. The next prime is 242013329. The reversal of 242013311 is 113310242.

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 242013311 - 2² = 242013307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242013311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242013301) 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, 3903410 + ... + 3903471.

It is an arithmetic number, because the mean of its divisors is an integer number (62455056).

Almost surely, 2^242013311 is an apocalyptic number.

242013311 is a deficient number, since it is larger than the sum of its proper divisors (7806913).

242013311 is an equidigital number, since it uses as much as digits as its factorization.

242013311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7806912.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 242013311 is about 15556.7770119649. Note that the first 3 decimals coincide. The cubic root of 242013311 is about 623.1793938319.

Adding to 242013311 its reverse (113310242), we get a palindrome (355323553).

The spelling of 242013311 in words is "two hundred forty-two million, thirteen thousand, three hundred eleven".