1003112261 has 2 divisors, whose sum is σ = 1003112262. Its totient is φ = 1003112260.

The previous prime is 1003112237. The next prime is 1003112281. The reversal of 1003112261 is 1622113001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1000520161 + 2592100 = 31631^2 + 1610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1003112261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1003112221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501556130 + 501556131.

It is an arithmetic number, because the mean of its divisors is an integer number (501556131).

Almost surely, 2^1003112261 is an apocalyptic number.

It is an amenable number.

1003112261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003112261 is an equidigital number, since it uses as much as digits as its factorization.

1003112261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1003112261 is about 31671.9475403708. The cubic root of 1003112261 is about 1001.0363459494.

Adding to 1003112261 its reverse (1622113001), we get a palindrome (2625225262).

The spelling of 1003112261 in words is "one billion, three million, one hundred twelve thousand, two hundred sixty-one".