1312223222031 has 32 divisors (see below), whose sum is σ = 1801493084160. Its totient is φ = 849144594144.

The previous prime is 1312223222003. The next prime is 1312223222053. The reversal of 1312223222031 is 1302223222131.

It is a de Polignac number, because none of the positive numbers 2^k-1312223222031 is a prime.

It is a super-2 number, since 2×1312223222031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312223221992 and 1312223222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312223222131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37089556 + ... + 37124918.

It is an arithmetic number, because the mean of its divisors is an integer number (56296658880).

Almost surely, 2^{1312223222031} is an apocalyptic number.

1312223222031 is a deficient number, since it is larger than the sum of its proper divisors (489269862129).

1312223222031 is a wasteful number, since it uses less digits than its factorization.

1312223222031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37195.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1312223222031 its reverse (1302223222131), we get a palindrome (2614446444162).

The spelling of 1312223222031 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, two hundred twenty-two thousand, thirty-one".