311130123001 has 4 divisors (see below), whose sum is σ = 312421119604. Its totient is φ = 309839126400.

The previous prime is 311130122957. The next prime is 311130123023. The reversal of 311130123001 is 100321031113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100321031113 = 1597 ⋅62818429.

It can be written as a sum of positive squares in 2 ways, for example, as 273214244601 + 37915878400 = 522699^2 + 194720^2 .

It is a cyclic number.

It is not a de Polignac number, because 311130123001 - 2¹¹ = 311130120953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311130123301) 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, 645497940 + ... + 645498421.

It is an arithmetic number, because the mean of its divisors is an integer number (78105279901).

Almost surely, 2^311130123001 is an apocalyptic number.

It is an amenable number.

311130123001 is a deficient number, since it is larger than the sum of its proper divisors (1290996603).

311130123001 is a wasteful number, since it uses less digits than its factorization.

311130123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290996602.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 311130123001 its reverse (100321031113), we get a palindrome (411451154114).

The spelling of 311130123001 in words is "three hundred eleven billion, one hundred thirty million, one hundred twenty-three thousand, one".