31234100203 has 4 divisors (see below), whose sum is σ = 31629468640. Its totient is φ = 30838731768.

The previous prime is 31234100197. The next prime is 31234100297. The reversal of 31234100203 is 30200143213.

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

It is a cyclic number.

It is not a de Polignac number, because 31234100203 - 2⁹ = 31234099691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31234100903) 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, 197684100 + ... + 197684257.

It is an arithmetic number, because the mean of its divisors is an integer number (7907367160).

Almost surely, 2^31234100203 is an apocalyptic number.

31234100203 is a deficient number, since it is larger than the sum of its proper divisors (395368437).

31234100203 is an equidigital number, since it uses as much as digits as its factorization.

31234100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395368436.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31234100203 its reverse (30200143213), we get a palindrome (61434243416).

The spelling of 31234100203 in words is "thirty-one billion, two hundred thirty-four million, one hundred thousand, two hundred three".