1231038886 has 16 divisors (see below), whose sum is σ = 2302202880. Its totient is φ = 479625480.

The previous prime is 1231038883. The next prime is 1231038889. The reversal of 1231038886 is 6888301321.

It is an interprime number because it is at equal distance from previous prime (1231038883) and next prime (1231038889).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231038881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3996726 + ... + 3997033.

It is an arithmetic number, because the mean of its divisors is an integer number (143887680).

Almost surely, 2^1231038886 is an apocalyptic number.

1231038886 is a deficient number, since it is larger than the sum of its proper divisors (1071163994).

1231038886 is a wasteful number, since it uses less digits than its factorization.

1231038886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7993779.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1231038886 is about 35086.1637401412. The cubic root of 1231038886 is about 1071.7428393648.

The spelling of 1231038886 in words is "one billion, two hundred thirty-one million, thirty-eight thousand, eight hundred eighty-six".