1231332113 has 8 divisors (see below), whose sum is σ = 1343549856. Its totient is φ = 1119160800.

The previous prime is 1231332079. The next prime is 1231332119. The reversal of 1231332113 is 3112331321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231332113 - 2¹⁰ = 1231331089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231332119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67070 + ... + 83432.

It is an arithmetic number, because the mean of its divisors is an integer number (167943732).

Almost surely, 2^1231332113 is an apocalyptic number.

It is an amenable number.

1231332113 is a deficient number, since it is larger than the sum of its proper divisors (112217743).

1231332113 is a wasteful number, since it uses less digits than its factorization.

1231332113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23215.

The product of its digits is 324, while the sum is 20.

The square root of 1231332113 is about 35090.3421613412. The cubic root of 1231332113 is about 1071.8279271153.

Adding to 1231332113 its reverse (3112331321), we get a palindrome (4343663434).

The spelling of 1231332113 in words is "one billion, two hundred thirty-one million, three hundred thirty-two thousand, one hundred thirteen".