1231011412 has 12 divisors (see below), whose sum is σ = 2280991860. Its totient is φ = 579299456.

The previous prime is 1231011403. The next prime is 1231011427. The reversal of 1231011412 is 2141101321.

It can be written as a sum of positive squares in 2 ways, for example, as 662856516 + 568154896 = 25746^2 + 23836^2 .

It is a congruent number.

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, 9051487 + ... + 9051622.

It is an arithmetic number, because the mean of its divisors is an integer number (190082655).

Almost surely, 2^1231011412 is an apocalyptic number.

It is an amenable number.

1231011412 is a deficient number, since it is larger than the sum of its proper divisors (1049980448).

1231011412 is a wasteful number, since it uses less digits than its factorization.

1231011412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18103130 (or 18103128 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1231011412 is about 35085.7722160992. The cubic root of 1231011412 is about 1071.7348663478.

Adding to 1231011412 its reverse (2141101321), we get a palindrome (3372112733).

The spelling of 1231011412 in words is "one billion, two hundred thirty-one million, eleven thousand, four hundred twelve".