1231490192 has 20 divisors (see below), whose sum is σ = 2431033020. Its totient is φ = 604126848.

The previous prime is 1231490189. The next prime is 1231490213. The reversal of 1231490192 is 2910941321.

It can be written as a sum of positive squares in 2 ways, for example, as 391881616 + 839608576 = 19796^2 + 28976^2 .

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, 725267 + ... + 726962.

It is an arithmetic number, because the mean of its divisors is an integer number (121551651).

Almost surely, 2^1231490192 is an apocalyptic number.

It is an amenable number.

1231490192 is a deficient number, since it is larger than the sum of its proper divisors (1199542828).

1231490192 is a wasteful number, since it uses less digits than its factorization.

1231490192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452290 (or 1452284 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1231490192 is about 35092.5945464282. The cubic root of 1231490192 is about 1071.8737924117.

The spelling of 1231490192 in words is "one billion, two hundred thirty-one million, four hundred ninety thousand, one hundred ninety-two".