203020231031 has 4 divisors (see below), whose sum is σ = 204193758552. Its totient is φ = 201846703512.

The previous prime is 203020231019. The next prime is 203020231091. The reversal of 203020231031 is 130132020302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203020231031 - 2¹⁴ = 203020214647 is a prime.

It is a super-2 number, since 2×203020231031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203020231091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586763501 + ... + 586763846.

It is an arithmetic number, because the mean of its divisors is an integer number (51048439638).

Almost surely, 2^203020231031 is an apocalyptic number.

203020231031 is a deficient number, since it is larger than the sum of its proper divisors (1173527521).

203020231031 is a wasteful number, since it uses less digits than its factorization.

203020231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173527520.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 203020231031 its reverse (130132020302), we get a palindrome (333152251333).

The spelling of 203020231031 in words is "two hundred three billion, twenty million, two hundred thirty-one thousand, thirty-one".