1013242261 has 4 divisors (see below), whose sum is σ = 1013306112. Its totient is φ = 1013178412.

The previous prime is 1013242249. The next prime is 1013242267. The reversal of 1013242261 is 1622423101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1013242261 - 2⁷ = 1013242133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013242267) 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, 12300 + ... + 46666.

It is an arithmetic number, because the mean of its divisors is an integer number (253326528).

Almost surely, 2^1013242261 is an apocalyptic number.

It is an amenable number.

1013242261 is a deficient number, since it is larger than the sum of its proper divisors (63851).

1013242261 is an equidigital number, since it uses as much as digits as its factorization.

1013242261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63850.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1013242261 is about 31831.4665229235. The cubic root of 1013242261 is about 1004.3947449240.

Adding to 1013242261 its reverse (1622423101), we get a palindrome (2635665362).

The spelling of 1013242261 in words is "one billion, thirteen million, two hundred forty-two thousand, two hundred sixty-one".