1331423012 has 12 divisors (see below), whose sum is σ = 2386819596. Its totient is φ = 649474560.

The previous prime is 1331422997. The next prime is 1331423069. The reversal of 1331423012 is 2103241331.

It can be written as a sum of positive squares in 2 ways, for example, as 442429156 + 888993856 = 21034^2 + 29816^2 .

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, 4059053 + ... + 4059380.

It is an arithmetic number, because the mean of its divisors is an integer number (198901633).

Almost surely, 2^1331423012 is an apocalyptic number.

It is an amenable number.

1331423012 is a deficient number, since it is larger than the sum of its proper divisors (1055396584).

1331423012 is a wasteful number, since it uses less digits than its factorization.

1331423012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8118478 (or 8118476 counting only the distinct ones).

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

The square root of 1331423012 is about 36488.6696386700. The cubic root of 1331423012 is about 1100.1165198883.

Adding to 1331423012 its reverse (2103241331), we get a palindrome (3434664343).

The spelling of 1331423012 in words is "one billion, three hundred thirty-one million, four hundred twenty-three thousand, twelve".