12031887146 has 4 divisors (see below), whose sum is σ = 18047830722. Its totient is φ = 6015943572.

The previous prime is 12031887137. The next prime is 12031887157. The reversal of 12031887146 is 64178813021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8651046121 + 3380841025 = 93011^2 + 58145^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3007971785 + ... + 3007971788.

Almost surely, 2^12031887146 is an apocalyptic number.

12031887146 is a deficient number, since it is larger than the sum of its proper divisors (6015943576).

12031887146 is an equidigital number, since it uses as much as digits as its factorization.

12031887146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015943575.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 12031887146 in words is "twelve billion, thirty-one million, eight hundred eighty-seven thousand, one hundred forty-six".