1231674863 has 16 divisors (see below), whose sum is σ = 1343321280. Its totient is φ = 1125712896.

The previous prime is 1231674841. The next prime is 1231674881. The reversal of 1231674863 is 3684761321.

It is a cyclic number.

It is not a de Polignac number, because 1231674863 - 2²² = 1227480559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231674863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231674823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55181 + ... + 74217.

It is an arithmetic number, because the mean of its divisors is an integer number (83957580).

Almost surely, 2^1231674863 is an apocalyptic number.

1231674863 is a deficient number, since it is larger than the sum of its proper divisors (111646417).

1231674863 is a wasteful number, since it uses less digits than its factorization.

1231674863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19186.

The product of its digits is 145152, while the sum is 41.

The square root of 1231674863 is about 35095.2256439533. The cubic root of 1231674863 is about 1071.9273681832.

The spelling of 1231674863 in words is "one billion, two hundred thirty-one million, six hundred seventy-four thousand, eight hundred sixty-three".