311012351623 has 2 divisors, whose sum is σ = 311012351624. Its totient is φ = 311012351622.

The previous prime is 311012351569. The next prime is 311012351627. The reversal of 311012351623 is 326153210113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311012351623 - 2¹³ = 311012343431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311012351591 and 311012351600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311012351627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155506175811 + 155506175812.

It is an arithmetic number, because the mean of its divisors is an integer number (155506175812).

Almost surely, 2^311012351623 is an apocalyptic number.

311012351623 is a deficient number, since it is larger than the sum of its proper divisors (1).

311012351623 is an equidigital number, since it uses as much as digits as its factorization.

311012351623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 311012351623 its reverse (326153210113), we get a palindrome (637165561736).

The spelling of 311012351623 in words is "three hundred eleven billion, twelve million, three hundred fifty-one thousand, six hundred twenty-three".