131000203 has 16 divisors (see below), whose sum is σ = 141797376. Its totient is φ = 120669120.

The previous prime is 131000197. The next prime is 131000227. The reversal of 131000203 is 302000131.

It is a cyclic number.

It is not a de Polignac number, because 131000203 - 2⁹ = 130999691 is a prime.

It is a super-2 number, since 2×131000203² = 34322106372082418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131000203.

It is not an unprimeable number, because it can be changed into a prime (131000293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222876 + ... + 223462.

It is an arithmetic number, because the mean of its divisors is an integer number (8862336).

Almost surely, 2^131000203 is an apocalyptic number.

131000203 is a deficient number, since it is larger than the sum of its proper divisors (10797173).

131000203 is a wasteful number, since it uses less digits than its factorization.

131000203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 131000203 is about 11445.5320103523. The cubic root of 131000203 is about 507.8755701508.

Adding to 131000203 its reverse (302000131), we get a palindrome (433000334).

The spelling of 131000203 in words is "one hundred thirty-one million, two hundred three", and thus it is an aban number.