203112132323 has 4 divisors (see below), whose sum is σ = 207835670328. Its totient is φ = 198388594320.

The previous prime is 203112132257. The next prime is 203112132329. The reversal of 203112132323 is 323231211302.

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

It is a de Polignac number, because none of the positive numbers 2^k-203112132323 is a prime.

It is a super-2 number, since 2×203112132323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203112132329) 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, 2361768938 + ... + 2361769023.

It is an arithmetic number, because the mean of its divisors is an integer number (51958917582).

Almost surely, 2^203112132323 is an apocalyptic number.

203112132323 is a deficient number, since it is larger than the sum of its proper divisors (4723538005).

203112132323 is an equidigital number, since it uses as much as digits as its factorization.

203112132323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723538004.

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

Adding to 203112132323 its reverse (323231211302), we get a palindrome (526343343625).

The spelling of 203112132323 in words is "two hundred three billion, one hundred twelve million, one hundred thirty-two thousand, three hundred twenty-three".