20312000123202 has 24 divisors (see below), whose sum is σ = 44198214869484. Its totient is φ = 6741608050944.

The previous prime is 20312000123201. The next prime is 20312000123221. The reversal of 20312000123202 is 20232100021302.

20312000123202 is a `hidden beast` number, since 20 + 312 + 0 + 0 + 0 + 12 + 320 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20234154101121 + 77846022081 = 4498239^2 + 279009^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20312000123201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2421550423 + ... + 2421558810.

Almost surely, 2^{20312000123202} is an apocalyptic number.

20312000123202 is an abundant number, since it is smaller than the sum of its proper divisors (23886214746282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20312000123202 is a wasteful number, since it uses less digits than its factorization.

20312000123202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843109474 (or 4843109471 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20312000123202 its reverse (20232100021302), we get a palindrome (40544100144504).

The spelling of 20312000123202 in words is "twenty trillion, three hundred twelve billion, one hundred twenty-three thousand, two hundred two".