1231400302 has 24 divisors (see below), whose sum is σ = 2040990336. Its totient is φ = 556776000.

The previous prime is 1231400299. The next prime is 1231400309. The reversal of 1231400302 is 2030041321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231400309) 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 11 ways as a sum of consecutive naturals, for example, 32902 + ... + 59542.

It is an arithmetic number, because the mean of its divisors is an integer number (85041264).

Almost surely, 2^1231400302 is an apocalyptic number.

1231400302 is a deficient number, since it is larger than the sum of its proper divisors (809590034).

1231400302 is a wasteful number, since it uses less digits than its factorization.

1231400302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26856 (or 26845 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1231400302 is about 35091.3137685097. The cubic root of 1231400302 is about 1071.8477120633.

Adding to 1231400302 its reverse (2030041321), we get a palindrome (3261441623).

The spelling of 1231400302 in words is "one billion, two hundred thirty-one million, four hundred thousand, three hundred two".