23132431442 has 4 divisors (see below), whose sum is σ = 34698647166. Its totient is φ = 11566215720.

The previous prime is 23132431433. The next prime is 23132431459. The reversal of 23132431442 is 24413423132.

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

It can be written as a sum of positive squares in only one way, i.e., 22861137601 + 271293841 = 151199^2 + 16471^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5783107859 + ... + 5783107862.

Almost surely, 2^23132431442 is an apocalyptic number.

23132431442 is a deficient number, since it is larger than the sum of its proper divisors (11566215724).

23132431442 is a wasteful number, since it uses less digits than its factorization.

23132431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11566215723.

The product of its digits is 13824, while the sum is 29.

Adding to 23132431442 its reverse (24413423132), we get a palindrome (47545854574).

The spelling of 23132431442 in words is "twenty-three billion, one hundred thirty-two million, four hundred thirty-one thousand, four hundred forty-two".