31120313203 has 8 divisors (see below), whose sum is σ = 37658194272. Its totient is φ = 25105462656.

The previous prime is 31120313179. The next prime is 31120313251. The reversal of 31120313203 is 30231302113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31120313203 - 2⁵ = 31120313171 is a prime.

It is a super-2 number, since 2×31120313203² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31120313603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130757500 + ... + 130757737.

It is an arithmetic number, because the mean of its divisors is an integer number (4707274284).

Almost surely, 2^31120313203 is an apocalyptic number.

31120313203 is a deficient number, since it is larger than the sum of its proper divisors (6537881069).

31120313203 is a wasteful number, since it uses less digits than its factorization.

31120313203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261515261.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31120313203 its reverse (30231302113), we get a palindrome (61351615316).

The spelling of 31120313203 in words is "thirty-one billion, one hundred twenty million, three hundred thirteen thousand, two hundred three".