31312203202031 has 16 divisors (see below), whose sum is σ = 31859335411200. Its totient is φ = 30765622776000.

The previous prime is 31312203202009. The next prime is 31312203202067. The reversal of 31312203202031 is 13020230221313.

It is a cyclic number.

It is not a de Polignac number, because 31312203202031 - 2¹⁰ = 31312203201007 is a prime.

It is a super-2 number, since 2×31312203202031² (a number of 28 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 = 31312203201988 and 31312203202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312203802031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011001376 + ... + 1011032346.

It is an arithmetic number, because the mean of its divisors is an integer number (1991208463200).

Almost surely, 2^{31312203202031} is an apocalyptic number.

31312203202031 is a deficient number, since it is larger than the sum of its proper divisors (547132209169).

31312203202031 is a wasteful number, since it uses less digits than its factorization.

31312203202031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39310.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31312203202031 its reverse (13020230221313), we get a palindrome (44332433423344).

The spelling of 31312203202031 in words is "thirty-one trillion, three hundred twelve billion, two hundred three million, two hundred two thousand, thirty-one".