203123434202 has 32 divisors (see below), whose sum is σ = 356813653392. Its totient is φ = 85849887744.

The previous prime is 203123434201. The next prime is 203123434243. The reversal of 203123434202 is 202434321302.

It can be written as a sum of positive squares in 8 ways, for example, as 167945055721 + 35178378481 = 409811^2 + 187559^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (203123434201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6193853 + ... + 6226560.

Almost surely, 2^203123434202 is an apocalyptic number.

203123434202 is a deficient number, since it is larger than the sum of its proper divisors (153690219190).

203123434202 is a wasteful number, since it uses less digits than its factorization.

203123434202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12420482.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 203123434202 its reverse (202434321302), we get a palindrome (405557755504).

The spelling of 203123434202 in words is "two hundred three billion, one hundred twenty-three million, four hundred thirty-four thousand, two hundred two".