1231823696285 has 16 divisors (see below), whose sum is σ = 1819308844416. Its totient is φ = 779703789888.

The previous prime is 1231823696263. The next prime is 1231823696287. The reversal of 1231823696285 is 5826963281321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1231823696285 - 2²⁰ = 1231822647709 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231823696285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231823696287) 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, 1353651959 + ... + 1353652868.

It is an arithmetic number, because the mean of its divisors is an integer number (113706802776).

Almost surely, 2^{1231823696285} is an apocalyptic number.

It is an amenable number.

1231823696285 is a deficient number, since it is larger than the sum of its proper divisors (587485148131).

1231823696285 is a wasteful number, since it uses less digits than its factorization.

1231823696285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2707304852.

The product of its digits is 7464960, while the sum is 56.

The spelling of 1231823696285 in words is "one trillion, two hundred thirty-one billion, eight hundred twenty-three million, six hundred ninety-six thousand, two hundred eighty-five".