1262440231 has 8 divisors (see below), whose sum is σ = 1385203680. Its totient is φ = 1143341472.

The previous prime is 1262440229. The next prime is 1262440273. The reversal of 1262440231 is 1320442621.

It is a happy number.

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

It is not a de Polignac number, because 1262440231 - 2¹ = 1262440229 is a prime.

It is a super-2 number, since 2×1262440231² = 3187510673694666722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1262440196 and 1262440205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1262440211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915451 + ... + 916828.

It is an arithmetic number, because the mean of its divisors is an integer number (173150460).

Almost surely, 2^1262440231 is an apocalyptic number.

1262440231 is a deficient number, since it is larger than the sum of its proper divisors (122763449).

1262440231 is a wasteful number, since it uses less digits than its factorization.

1262440231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832345.

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

The square root of 1262440231 is about 35530.8349324921. The cubic root of 1262440231 is about 1080.7791105978.

Adding to 1262440231 its reverse (1320442621), we get a palindrome (2582882852).

The spelling of 1262440231 in words is "one billion, two hundred sixty-two million, four hundred forty thousand, two hundred thirty-one".