1231334120 has 16 divisors (see below), whose sum is σ = 2770501860. Its totient is φ = 492533632.

The previous prime is 1231334101. The next prime is 1231334149. The reversal of 1231334120 is 214331321.

It can be written as a sum of positive squares in 2 ways, for example, as 1223460484 + 7873636 = 34978^2 + 2806^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1231334092 and 1231334101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15391637 + ... + 15391716.

Almost surely, 2^1231334120 is an apocalyptic number.

1231334120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231334120 is an abundant number, since it is smaller than the sum of its proper divisors (1539167740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231334120 is a wasteful number, since it uses less digits than its factorization.

1231334120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30783364 (or 30783360 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1231334120 is about 35090.3707589418. The cubic root of 1231334120 is about 1071.8285094542.

Adding to 1231334120 its reverse (214331321), we get a palindrome (1445665441).

The spelling of 1231334120 in words is "one billion, two hundred thirty-one million, three hundred thirty-four thousand, one hundred twenty".