31423164203 has 4 divisors (see below), whose sum is σ = 31438398048. Its totient is φ = 31407930360.

The previous prime is 31423164181. The next prime is 31423164209. The reversal of 31423164203 is 30246132413.

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 31423164203 - 2¹² = 31423160107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31423164209) 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, 7613828 + ... + 7617953.

It is an arithmetic number, because the mean of its divisors is an integer number (7859599512).

Almost surely, 2^31423164203 is an apocalyptic number.

31423164203 is a deficient number, since it is larger than the sum of its proper divisors (15233845).

31423164203 is a wasteful number, since it uses less digits than its factorization.

31423164203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15233844.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 31423164203 its reverse (30246132413), we get a palindrome (61669296616).

The spelling of 31423164203 in words is "thirty-one billion, four hundred twenty-three million, one hundred sixty-four thousand, two hundred three".