31242042203 has 32 divisors (see below), whose sum is σ = 35366572032. Its totient is φ = 27482716800.

The previous prime is 31242042193. The next prime is 31242042217. The reversal of 31242042203 is 30224024213.

It is a cyclic number.

It is not a de Polignac number, because 31242042203 - 2¹⁴ = 31242025819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31242042233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1120613 + ... + 1148153.

It is an arithmetic number, because the mean of its divisors is an integer number (1105205376).

Almost surely, 2^31242042203 is an apocalyptic number.

31242042203 is a deficient number, since it is larger than the sum of its proper divisors (4124529829).

31242042203 is a wasteful number, since it uses less digits than its factorization.

31242042203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27675.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 31242042203 its reverse (30224024213), we get a palindrome (61466066416).

The spelling of 31242042203 in words is "thirty-one billion, two hundred forty-two million, forty-two thousand, two hundred three".