210000203121031 has 8 divisors (see below), whose sum is σ = 212878865004224. Its totient is φ = 207121593853440.

The previous prime is 210000203120969. The next prime is 210000203121083. The reversal of 210000203121031 is 130121302000012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210000203121031 - 2¹¹ = 210000203118983 is a prime.

It is a super-2 number, since 2×210000203121031² (a number of 29 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 = 210000203120996 and 210000203121014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210000203128031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5083050 + ... + 21114871.

It is an arithmetic number, because the mean of its divisors is an integer number (26609858125528).

Almost surely, 2^{210000203121031} is an apocalyptic number.

210000203121031 is a deficient number, since it is larger than the sum of its proper divisors (2878661883193).

210000203121031 is a wasteful number, since it uses less digits than its factorization.

210000203121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26307801.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 210000203121031 its reverse (130121302000012), we get a palindrome (340121505121043).

The spelling of 210000203121031 in words is "two hundred ten trillion, two hundred three million, one hundred twenty-one thousand, thirty-one".