1230402312 has 48 divisors (see below), whose sum is σ = 3455765040. Its totient is φ = 410133456.

The previous prime is 1230402293. The next prime is 1230402317. The reversal of 1230402312 is 2132040321.

1230402312 is a `hidden beast` number, since 1 + 230 + 402 + 31 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1230402317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314518 + ... + 318405.

It is an arithmetic number, because the mean of its divisors is an integer number (71995105).

Almost surely, 2^1230402312 is an apocalyptic number.

1230402312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230402312 is an abundant number, since it is smaller than the sum of its proper divisors (2225362728).

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

1230402312 is an equidigital number, since it uses as much as digits as its factorization.

1230402312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632944 (or 632928 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1230402312 is about 35077.0909854281. The cubic root of 1230402312 is about 1071.5580736723.

Adding to 1230402312 its reverse (2132040321), we get a palindrome (3362442633).

The spelling of 1230402312 in words is "one billion, two hundred thirty million, four hundred two thousand, three hundred twelve".