312103111331 has 16 divisors (see below), whose sum is σ = 356704908288. Its totient is φ = 270479325600.

The previous prime is 312103111319. The next prime is 312103111343. The reversal of 312103111331 is 133111301213.

It is an interprime number because it is at equal distance from previous prime (312103111319) and next prime (312103111343).

It is not a de Polignac number, because 312103111331 - 2¹⁰ = 312103110307 is a prime.

It is a super-2 number, since 2×312103111331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312103111301) 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, 6807440 + ... + 6853133.

It is an arithmetic number, because the mean of its divisors is an integer number (22294056768).

Almost surely, 2^312103111331 is an apocalyptic number.

312103111331 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

312103111331 is a deficient number, since it is larger than the sum of its proper divisors (44601796957).

312103111331 is a wasteful number, since it uses less digits than its factorization.

312103111331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13660682.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 312103111331 its reverse (133111301213), we get a palindrome (445214412544).

The spelling of 312103111331 in words is "three hundred twelve billion, one hundred three million, one hundred eleven thousand, three hundred thirty-one".