1231011301 has 16 divisors (see below), whose sum is σ = 1349699904. Its totient is φ = 1115858304.

The previous prime is 1231011269. The next prime is 1231011373. The reversal of 1231011301 is 1031101321.

It is a cyclic number.

It is not a de Polignac number, because 1231011301 - 2⁵ = 1231011269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231011391) 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, 300201 + ... + 304273.

It is an arithmetic number, because the mean of its divisors is an integer number (84356244).

Almost surely, 2^1231011301 is an apocalyptic number.

It is an amenable number.

1231011301 is a deficient number, since it is larger than the sum of its proper divisors (118688603).

1231011301 is a wasteful number, since it uses less digits than its factorization.

1231011301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1231011301 is about 35085.7706342614. The cubic root of 1231011301 is about 1071.7348341351.

Adding to 1231011301 its reverse (1031101321), we get a palindrome (2262112622).

The spelling of 1231011301 in words is "one billion, two hundred thirty-one million, eleven thousand, three hundred one".