1243234131 has 8 divisors (see below), whose sum is σ = 1659754944. Its totient is φ = 827768040.

The previous prime is 1243234121. The next prime is 1243234133. The reversal of 1243234131 is 1314323421.

It is a happy number.

1243234131 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1243234131 - 2²¹ = 1241136979 is a prime.

It is a super-2 number, since 2×1243234131² = 3091262208966650322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243234133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260925 + ... + 265646.

It is an arithmetic number, because the mean of its divisors is an integer number (207469368).

Almost surely, 2^1243234131 is an apocalyptic number.

1243234131 is a deficient number, since it is larger than the sum of its proper divisors (416520813).

1243234131 is an equidigital number, since it uses as much as digits as its factorization.

1243234131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527361.

The product of its digits is 1728, while the sum is 24.

The square root of 1243234131 is about 35259.5253938563. The cubic root of 1243234131 is about 1075.2702781015.

Adding to 1243234131 its reverse (1314323421), we get a palindrome (2557557552).

The spelling of 1243234131 in words is "one billion, two hundred forty-three million, two hundred thirty-four thousand, one hundred thirty-one".