1231102423 has 4 divisors (see below), whose sum is σ = 1232720928. Its totient is φ = 1229483920.

The previous prime is 1231102399. The next prime is 1231102463. The reversal of 1231102423 is 3242011321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3242011321 = 883 ⋅3671587.

It is a cyclic number.

It is not a de Polignac number, because 1231102423 - 2¹³ = 1231094231 is a prime.

It is a super-2 number, since 2×1231102423² = 3031226351832941858, which contains 22 as substring.

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 1231102423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231102463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808111 + ... + 809632.

It is an arithmetic number, because the mean of its divisors is an integer number (308180232).

Almost surely, 2^1231102423 is an apocalyptic number.

1231102423 is a deficient number, since it is larger than the sum of its proper divisors (1618505).

1231102423 is an equidigital number, since it uses as much as digits as its factorization.

1231102423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618504.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1231102423 is about 35087.0691708498. The cubic root of 1231102423 is about 1071.7612774916.

Adding to 1231102423 its reverse (3242011321), we get a palindrome (4473113744).

The spelling of 1231102423 in words is "one billion, two hundred thirty-one million, one hundred two thousand, four hundred twenty-three".