20132431243 has 8 divisors (see below), whose sum is σ = 20836694880. Its totient is φ = 19428837120.

The previous prime is 20132431201. The next prime is 20132431309. The reversal of 20132431243 is 34213423102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132431243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20132434243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105798 + ... + 226843.

It is an arithmetic number, because the mean of its divisors is an integer number (2604586860).

Almost surely, 2^20132431243 is an apocalyptic number.

20132431243 is a deficient number, since it is larger than the sum of its proper divisors (704263637).

20132431243 is a wasteful number, since it uses less digits than its factorization.

20132431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334757.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20132431243 its reverse (34213423102), we get a palindrome (54345854345).

The spelling of 20132431243 in words is "twenty billion, one hundred thirty-two million, four hundred thirty-one thousand, two hundred forty-three".