1230012131 has 4 divisors (see below), whose sum is σ = 1230104664. Its totient is φ = 1229919600.

The previous prime is 1230012103. The next prime is 1230012191. The reversal of 1230012131 is 1312100321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230012131 is a prime.

It is a super-2 number, since 2×1230012131² = 3025859684814322322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230012191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22130 + ... + 54311.

It is an arithmetic number, because the mean of its divisors is an integer number (307526166).

Almost surely, 2^1230012131 is an apocalyptic number.

1230012131 is a deficient number, since it is larger than the sum of its proper divisors (92533).

1230012131 is an equidigital number, since it uses as much as digits as its factorization.

1230012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92532.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1230012131 is about 35071.5287804795. The cubic root of 1230012131 is about 1071.4447920787. Note that the first 3 decimals are identical.

Adding to 1230012131 its reverse (1312100321), we get a palindrome (2542112452).

The spelling of 1230012131 in words is "one billion, two hundred thirty million, twelve thousand, one hundred thirty-one".