312203444431 has 4 divisors (see below), whose sum is σ = 318094075512. Its totient is φ = 306312813352.

The previous prime is 312203444429. The next prime is 312203444471. The reversal of 312203444431 is 134444302213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134444302213 = 13 ⋅10341869401.

It is a cyclic number.

It is not a de Polignac number, because 312203444431 - 2¹ = 312203444429 is a prime.

It is a super-2 number, since 2×312203444431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312203444393 and 312203444402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312203444471) 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, 2945315461 + ... + 2945315566.

It is an arithmetic number, because the mean of its divisors is an integer number (79523518878).

Almost surely, 2^312203444431 is an apocalyptic number.

312203444431 is a deficient number, since it is larger than the sum of its proper divisors (5890631081).

312203444431 is an equidigital number, since it uses as much as digits as its factorization.

312203444431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5890631080.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 312203444431 its reverse (134444302213), we get a palindrome (446647746644).

The spelling of 312203444431 in words is "three hundred twelve billion, two hundred three million, four hundred forty-four thousand, four hundred thirty-one".