203113087 has 2 divisors, whose sum is σ = 203113088. Its totient is φ = 203113086.

The previous prime is 203113073. The next prime is 203113109. The reversal of 203113087 is 780311302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203113087 is a prime.

It is a super-2 number, since 2×203113087² = 82509852221339138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203113067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556543 + 101556544.

It is an arithmetic number, because the mean of its divisors is an integer number (101556544).

Almost surely, 2^203113087 is an apocalyptic number.

203113087 is a deficient number, since it is larger than the sum of its proper divisors (1).

203113087 is an equidigital number, since it uses as much as digits as its factorization.

203113087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 203113087 is about 14251.7748719238. The cubic root of 203113087 is about 587.8221798285.

Adding to 203113087 its reverse (780311302), we get a palindrome (983424389).

The spelling of 203113087 in words is "two hundred three million, one hundred thirteen thousand, eighty-seven".