1231132413 has 16 divisors (see below), whose sum is σ = 1926715520. Its totient is φ = 684490176.

The previous prime is 1231132393. The next prime is 1231132421. The reversal of 1231132413 is 3142311321.

It is not a de Polignac number, because 1231132413 - 2⁶ = 1231132349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231132413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231132423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791458 + ... + 793011.

It is an arithmetic number, because the mean of its divisors is an integer number (120419720).

Almost surely, 2^1231132413 is an apocalyptic number.

It is an amenable number.

1231132413 is a deficient number, since it is larger than the sum of its proper divisors (695583107).

1231132413 is a wasteful number, since it uses less digits than its factorization.

1231132413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584516.

The product of its digits is 432, while the sum is 21.

The square root of 1231132413 is about 35087.4965336657. The cubic root of 1231132413 is about 1071.7699802226.

Adding to 1231132413 its reverse (3142311321), we get a palindrome (4373443734).

The spelling of 1231132413 in words is "one billion, two hundred thirty-one million, one hundred thirty-two thousand, four hundred thirteen".