203203120312031 has 8 divisors (see below), whose sum is σ = 232232867717760. Its totient is φ = 174173555460888.

The previous prime is 203203120312021. The next prime is 203203120312043. The reversal of 203203120312031 is 130213021302302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203203120312031 is a prime.

It is a super-2 number, since 2×203203120312031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203203120311988 and 203203120312006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203203120312021) 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, 43245041 + ... + 47713098.

It is an arithmetic number, because the mean of its divisors is an integer number (29029108464720).

Almost surely, 2^{203203120312031} is an apocalyptic number.

203203120312031 is a deficient number, since it is larger than the sum of its proper divisors (29029747405729).

203203120312031 is an equidigital number, since it uses as much as digits as its factorization.

203203120312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91277293.

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

Adding to 203203120312031 its reverse (130213021302302), we get a palindrome (333416141614333).

The spelling of 203203120312031 in words is "two hundred three trillion, two hundred three billion, one hundred twenty million, three hundred twelve thousand, thirty-one".