1231198683 has 32 divisors (see below), whose sum is σ = 1995114240. Its totient is φ = 665024640.

The previous prime is 1231198679. The next prime is 1231198691. The reversal of 1231198683 is 3868911321.

It is not a de Polignac number, because 1231198683 - 2² = 1231198679 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231198663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37041 + ... + 61922.

It is an arithmetic number, because the mean of its divisors is an integer number (62347320).

Almost surely, 2^1231198683 is an apocalyptic number.

1231198683 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1231198683 is a deficient number, since it is larger than the sum of its proper divisors (763915557).

1231198683 is a wasteful number, since it uses less digits than its factorization.

1231198683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99019.

The product of its digits is 62208, while the sum is 42.

The square root of 1231198683 is about 35088.4408744532. The cubic root of 1231198683 is about 1071.7892104645.

The spelling of 1231198683 in words is "one billion, two hundred thirty-one million, one hundred ninety-eight thousand, six hundred eighty-three".