1240311140 has 12 divisors (see below), whose sum is σ = 2604653436. Its totient is φ = 496124448.

The previous prime is 1240311113. The next prime is 1240311167. The reversal of 1240311140 is 411130421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1240311113) and next prime (1240311167).

It can be written as a sum of positive squares in 2 ways, for example, as 741146176 + 499164964 = 27224^2 + 22342^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31007759 + ... + 31007798.

It is an arithmetic number, because the mean of its divisors is an integer number (217054453).

Almost surely, 2^1240311140 is an apocalyptic number.

1240311140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240311140 is an abundant number, since it is smaller than the sum of its proper divisors (1364342296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240311140 is a wasteful number, since it uses less digits than its factorization.

1240311140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62015566 (or 62015564 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1240311140 is about 35218.0513373469. The cubic root of 1240311140 is about 1074.4269207959.

Adding to 1240311140 its reverse (411130421), we get a palindrome (1651441561).

The spelling of 1240311140 in words is "one billion, two hundred forty million, three hundred eleven thousand, one hundred forty".