1243416231 has 16 divisors (see below), whose sum is σ = 1901521920. Its totient is φ = 802203480.

The previous prime is 1243416211. The next prime is 1243416257. The reversal of 1243416231 is 1326143421.

It is a happy number.

1243416231 is a `hidden beast` number, since 1 + 2 + 4 + 34 + 1 + 623 + 1 = 666.

It is not a de Polignac number, because 1243416231 - 2¹³ = 1243408039 is a prime.

It is a super-2 number, since 2×1243416231² = 3092167847028490722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1243416195 and 1243416204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243416211) 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, 741945 + ... + 743618.

It is an arithmetic number, because the mean of its divisors is an integer number (118845120).

Almost surely, 2^1243416231 is an apocalyptic number.

1243416231 is a deficient number, since it is larger than the sum of its proper divisors (658105689).

1243416231 is a wasteful number, since it uses less digits than its factorization.

1243416231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485603 (or 1485597 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1243416231 is about 35262.1075802341. The cubic root of 1243416231 is about 1075.3227748258.

Adding to 1243416231 its reverse (1326143421), we get a palindrome (2569559652).

The spelling of 1243416231 in words is "one billion, two hundred forty-three million, four hundred sixteen thousand, two hundred thirty-one".