1231434312 has 32 divisors (see below), whose sum is σ = 3130768800. Its totient is φ = 403520384.

The previous prime is 1231434307. The next prime is 1231434313. The reversal of 1231434312 is 2134341321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1231434313) 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, 433413 + ... + 436244.

It is an arithmetic number, because the mean of its divisors is an integer number (97836525).

Almost surely, 2^1231434312 is an apocalyptic number.

1231434312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231434312 is an abundant number, since it is smaller than the sum of its proper divisors (1899334488).

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

1231434312 is a wasteful number, since it uses less digits than its factorization.

1231434312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869725 (or 869721 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1231434312 is about 35091.7983580209. The cubic root of 1231434312 is about 1071.8575797467.

Adding to 1231434312 its reverse (2134341321), we get a palindrome (3365775633).

The spelling of 1231434312 in words is "one billion, two hundred thirty-one million, four hundred thirty-four thousand, three hundred twelve".