1231240301 has 4 divisors (see below), whose sum is σ = 1284772512. Its totient is φ = 1177708092.

The previous prime is 1231240271. The next prime is 1231240313. The reversal of 1231240301 is 1030421321.

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 an emirpimes, since its reverse is a distinct semiprime: 1030421321 = 23 ⋅44800927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231240301 is a prime.

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 1231240301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231240391) 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, 26766071 + ... + 26766116.

It is an arithmetic number, because the mean of its divisors is an integer number (321193128).

Almost surely, 2^1231240301 is an apocalyptic number.

It is an amenable number.

1231240301 is a deficient number, since it is larger than the sum of its proper divisors (53532211).

1231240301 is an equidigital number, since it uses as much as digits as its factorization.

1231240301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53532210.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1231240301 is about 35089.0339137458. The cubic root of 1231240301 is about 1071.8012868313.

Adding to 1231240301 its reverse (1030421321), we get a palindrome (2261661622).

The spelling of 1231240301 in words is "one billion, two hundred thirty-one million, two hundred forty thousand, three hundred one".