1231442341 has 4 divisors (see below), whose sum is σ = 1273905900. Its totient is φ = 1188978784.

The previous prime is 1231442321. The next prime is 1231442363. The reversal of 1231442341 is 1432441321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1432441321 = 643 ⋅2227747.

It can be written as a sum of positive squares in 2 ways, for example, as 868539841 + 362902500 = 29471^2 + 19050^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231442341 - 2¹⁹ = 1230918053 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 (1231442321) 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, 21231736 + ... + 21231793.

It is an arithmetic number, because the mean of its divisors is an integer number (318476475).

Almost surely, 2^1231442341 is an apocalyptic number.

It is an amenable number.

1231442341 is a deficient number, since it is larger than the sum of its proper divisors (42463559).

1231442341 is an equidigital number, since it uses as much as digits as its factorization.

1231442341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42463558.

The product of its digits is 2304, while the sum is 25.

The square root of 1231442341 is about 35091.9127577851. The cubic root of 1231442341 is about 1071.8599092595.

Adding to 1231442341 its reverse (1432441321), we get a palindrome (2663883662).

The spelling of 1231442341 in words is "one billion, two hundred thirty-one million, four hundred forty-two thousand, three hundred forty-one".