31304320203 has 16 divisors (see below), whose sum is σ = 45797905440. Its totient is φ = 18900720384.

The previous prime is 31304320171. The next prime is 31304320231. The reversal of 31304320203 is 30202340313.

It is not a de Polignac number, because 31304320203 - 2⁵ = 31304320171 is a prime.

It is a super-2 number, since 2×31304320203² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31304320203.

It is not an unprimeable number, because it can be changed into a prime (31304320253) 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, 7570338 + ... + 7574471.

It is an arithmetic number, because the mean of its divisors is an integer number (2862369090).

Almost surely, 2^31304320203 is an apocalyptic number.

31304320203 is a deficient number, since it is larger than the sum of its proper divisors (14493585237).

31304320203 is a wasteful number, since it uses less digits than its factorization.

31304320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15144878.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 31304320203 its reverse (30202340313), we get a palindrome (61506660516).

The spelling of 31304320203 in words is "thirty-one billion, three hundred four million, three hundred twenty thousand, two hundred three".