1240231013 has 6 divisors (see below), whose sum is σ = 1442717766. Its totient is φ = 1063055112.

The previous prime is 1240230973. The next prime is 1240231019. The reversal of 1240231013 is 3101320421.

It can be written as a sum of positive squares in only one way, i.e., 678446209 + 561784804 = 26047^2 + 23702^2 .

It is not a de Polignac number, because 1240231013 - 2¹⁴ = 1240214629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240230982 and 1240231000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240231019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12655370 + ... + 12655467.

It is an arithmetic number, because the mean of its divisors is an integer number (240452961).

Almost surely, 2^1240231013 is an apocalyptic number.

It is an amenable number.

1240231013 is a deficient number, since it is larger than the sum of its proper divisors (202486753).

1240231013 is an equidigital number, since it uses as much as digits as its factorization.

1240231013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25310851 (or 25310844 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1240231013 is about 35216.9137347383. The cubic root of 1240231013 is about 1074.4037834672.

Adding to 1240231013 its reverse (3101320421), we get a palindrome (4341551434).

The spelling of 1240231013 in words is "one billion, two hundred forty million, two hundred thirty-one thousand, thirteen".