311431311020023 has 8 divisors (see below), whose sum is σ = 318101180698368. Its totient is φ = 304763260990584.

The previous prime is 311431311020003. The next prime is 311431311020033. The reversal of 311431311020023 is 320020113134113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311431311020023 - 2¹³ = 311431311011831 is a prime.

It is a super-2 number, since 2×311431311020023² (a number of 30 digits) contains 22 as substring.

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 311431311020023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311431311020003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454566261 + ... + 455250862.

It is an arithmetic number, because the mean of its divisors is an integer number (39762647587296).

Almost surely, 2^{311431311020023} is an apocalyptic number.

311431311020023 is a deficient number, since it is larger than the sum of its proper divisors (6669869678345).

311431311020023 is an equidigital number, since it uses as much as digits as its factorization.

311431311020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909824453.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 311431311020023 its reverse (320020113134113), we get a palindrome (631451424154136).

The spelling of 311431311020023 in words is "three hundred eleven trillion, four hundred thirty-one billion, three hundred eleven million, twenty thousand, twenty-three".