203123031132122 has 4 divisors (see below), whose sum is σ = 304684546698186. Its totient is φ = 101561515566060.

The previous prime is 203123031132089. The next prime is 203123031132139. The reversal of 203123031132122 is 221231130321302.

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., 194506229009401 + 8616802122721 = 13946549^2 + 2935439^2 .

It is a junction number, because it is equal to n+sod(n) for n = 203123031132091 and 203123031132100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50780757783029 + ... + 50780757783032.

Almost surely, 2^{203123031132122} is an apocalyptic number.

203123031132122 is a deficient number, since it is larger than the sum of its proper divisors (101561515566064).

203123031132122 is a wasteful number, since it uses less digits than its factorization.

203123031132122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101561515566063.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 203123031132122 its reverse (221231130321302), we get a palindrome (424354161453424).

The spelling of 203123031132122 in words is "two hundred three trillion, one hundred twenty-three billion, thirty-one million, one hundred thirty-two thousand, one hundred twenty-two".