311111332320031 has 4 divisors (see below), whose sum is σ = 311301382005432. Its totient is φ = 310921282634632.

The previous prime is 311111332319933. The next prime is 311111332320053. The reversal of 311111332320031 is 130023233111113.

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 311111332320031 - 2²⁵ = 311111298765599 is a prime.

It is a super-2 number, since 2×311111332320031² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311111332319978 and 311111332320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311111332320431) 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, 95024840245 + ... + 95024843518.

It is an arithmetic number, because the mean of its divisors is an integer number (77825345501358).

Almost surely, 2^{311111332320031} is an apocalyptic number.

311111332320031 is a deficient number, since it is larger than the sum of its proper divisors (190049685401).

311111332320031 is a wasteful number, since it uses less digits than its factorization.

311111332320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190049685400.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 311111332320031 its reverse (130023233111113), we get a palindrome (441134565431144).

The spelling of 311111332320031 in words is "three hundred eleven trillion, one hundred eleven billion, three hundred thirty-two million, three hundred twenty thousand, thirty-one".