311212202313 has 16 divisors (see below), whose sum is σ = 415778446016. Its totient is φ = 207060572160.

The previous prime is 311212202263. The next prime is 311212202317. The reversal of 311212202313 is 313202212113.

It is not a de Polignac number, because 311212202313 - 2⁹ = 311212201801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 311212202313.

It is not an unprimeable number, because it can be changed into a prime (311212202317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7167198 + ... + 7210488.

It is an arithmetic number, because the mean of its divisors is an integer number (25986152876).

Almost surely, 2^311212202313 is an apocalyptic number.

It is an amenable number.

311212202313 is a deficient number, since it is larger than the sum of its proper divisors (104566243703).

311212202313 is a wasteful number, since it uses less digits than its factorization.

311212202313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48024.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 311212202313 its reverse (313202212113), we get a palindrome (624414414426).

The spelling of 311212202313 in words is "three hundred eleven billion, two hundred twelve million, two hundred two thousand, three hundred thirteen".