1240013131229 has 4 divisors (see below), whose sum is σ = 1250986698876. Its totient is φ = 1229039563584.

The previous prime is 1240013131219. The next prime is 1240013131267. The reversal of 1240013131229 is 9221313100421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16047062329 + 1223966068900 = 126677^2 + 1106330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240013131229 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 (1240013131219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5486783654 + ... + 5486783879.

It is an arithmetic number, because the mean of its divisors is an integer number (312746674719).

Almost surely, 2^{1240013131229} is an apocalyptic number.

It is an amenable number.

1240013131229 is a deficient number, since it is larger than the sum of its proper divisors (10973567647).

1240013131229 is a wasteful number, since it uses less digits than its factorization.

1240013131229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10973567646.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 1240013131229 in words is "one trillion, two hundred forty billion, thirteen million, one hundred thirty-one thousand, two hundred twenty-nine".