20312500543031 has 32 divisors (see below), whose sum is σ = 23095525939200. Its totient is φ = 17777475181440.

The previous prime is 20312500543001. The next prime is 20312500543043. The reversal of 20312500543031 is 13034500521302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20312500543031 - 2¹⁸ = 20312500280887 is a prime.

It is a super-2 number, since 2×20312500543031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20312500542985 and 20312500543003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312500543001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7638041 + ... + 9948098.

It is an arithmetic number, because the mean of its divisors is an integer number (721735185600).

Almost surely, 2^{20312500543031} is an apocalyptic number.

20312500543031 is a deficient number, since it is larger than the sum of its proper divisors (2783025396169).

20312500543031 is a wasteful number, since it uses less digits than its factorization.

20312500543031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17586279.

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 20312500543031 in words is "twenty trillion, three hundred twelve billion, five hundred million, five hundred forty-three thousand, thirty-one".