311113541 has 4 divisors (see below), whose sum is σ = 311167584. Its totient is φ = 311059500.

The previous prime is 311113519. The next prime is 311113559. The reversal of 311113541 is 145311113.

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 311113541 - 2⁶ = 311113477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311113511) 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, 17195 + ... + 30296.

It is an arithmetic number, because the mean of its divisors is an integer number (77791896).

Almost surely, 2^311113541 is an apocalyptic number.

It is an amenable number.

311113541 is a deficient number, since it is larger than the sum of its proper divisors (54043).

311113541 is an equidigital number, since it uses as much as digits as its factorization.

311113541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54042.

The product of its digits is 180, while the sum is 20.

The square root of 311113541 is about 17638.4109545049. The cubic root of 311113541 is about 677.5993352983.

Adding to 311113541 its reverse (145311113), we get a palindrome (456424654).

The spelling of 311113541 in words is "three hundred eleven million, one hundred thirteen thousand, five hundred forty-one".