1233131423 has 4 divisors (see below), whose sum is σ = 1272909888. Its totient is φ = 1193352960.

The previous prime is 1233131413. The next prime is 1233131429. The reversal of 1233131423 is 3241313321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1233131423 - 2¹⁶ = 1233065887 is a prime.

It is a super-2 number, since 2×1233131423² = 3041226212780009858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233131429) 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, 19889186 + ... + 19889247.

It is an arithmetic number, because the mean of its divisors is an integer number (318227472).

Almost surely, 2^1233131423 is an apocalyptic number.

1233131423 is a deficient number, since it is larger than the sum of its proper divisors (39778465).

1233131423 is an equidigital number, since it uses as much as digits as its factorization.

1233131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39778464.

The product of its digits is 1296, while the sum is 23.

The square root of 1233131423 is about 35115.9710530693. The cubic root of 1233131423 is about 1072.3497500718.

Adding to 1233131423 its reverse (3241313321), we get a palindrome (4474444744).

The spelling of 1233131423 in words is "one billion, two hundred thirty-three million, one hundred thirty-one thousand, four hundred twenty-three".