1240346263 has 12 divisors (see below), whose sum is σ = 1345770288. Its totient is φ = 1142656320.

The previous prime is 1240346257. The next prime is 1240346279. The reversal of 1240346263 is 3626430421.

It is a de Polignac number, because none of the positive numbers 2^k-1240346263 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 (1240346563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81006 + ... + 95092.

It is an arithmetic number, because the mean of its divisors is an integer number (112147524).

Almost surely, 2^1240346263 is an apocalyptic number.

1240346263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1240346263 is a deficient number, since it is larger than the sum of its proper divisors (105424025).

1240346263 is a wasteful number, since it uses less digits than its factorization.

1240346263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14634 (or 14621 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 1240346263 is about 35218.5499843477. The cubic root of 1240346263 is about 1074.4370625363.

Adding to 1240346263 its reverse (3626430421), we get a palindrome (4866776684).

The spelling of 1240346263 in words is "one billion, two hundred forty million, three hundred forty-six thousand, two hundred sixty-three".