1235143013 has 16 divisors (see below), whose sum is σ = 1445337600. Its totient is φ = 1045275840.

The previous prime is 1235142989. The next prime is 1235143027. The reversal of 1235143013 is 3103415321.

It is a cyclic number.

It is not a de Polignac number, because 1235143013 - 2¹⁶ = 1235077477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1235143013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235143043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72998 + ... + 88311.

It is an arithmetic number, because the mean of its divisors is an integer number (90333600).

Almost surely, 2^1235143013 is an apocalyptic number.

1235143013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1235143013 is a deficient number, since it is larger than the sum of its proper divisors (210194587).

1235143013 is a wasteful number, since it uses less digits than its factorization.

1235143013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161372.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1235143013 is about 35144.6014773251. The cubic root of 1235143013 is about 1072.9325363267.

Adding to 1235143013 its reverse (3103415321), we get a palindrome (4338558334).

The spelling of 1235143013 in words is "one billion, two hundred thirty-five million, one hundred forty-three thousand, thirteen".