311101120100231 has 4 divisors (see below), whose sum is σ = 311101159117464. Its totient is φ = 311101081083000.

The previous prime is 311101120100209. The next prime is 311101120100257. The reversal of 311101120100231 is 132001021101113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 311101120100231 - 2³⁰ = 311100046358407 is a prime.

It is a super-2 number, since 2×311101120100231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311101120103231) 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, 2749340 + ... + 25095041.

It is an arithmetic number, because the mean of its divisors is an integer number (77775289779366).

Almost surely, 2^{311101120100231} is an apocalyptic number.

311101120100231 is a deficient number, since it is larger than the sum of its proper divisors (39017233).

311101120100231 is a wasteful number, since it uses less digits than its factorization.

311101120100231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39017232.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 311101120100231 its reverse (132001021101113), we get a palindrome (443102141201344).

The spelling of 311101120100231 in words is "three hundred eleven trillion, one hundred one billion, one hundred twenty million, one hundred thousand, two hundred thirty-one".