31112320003 has 4 divisors (see below), whose sum is σ = 31112675440. Its totient is φ = 31111964568.

The previous prime is 31112319991. The next prime is 31112320049. The reversal of 31112320003 is 30002321113.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31112320003 - 2¹⁷ = 31112188931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31112320103) 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, 56293 + ... + 255721.

It is an arithmetic number, because the mean of its divisors is an integer number (7778168860).

Almost surely, 2^31112320003 is an apocalyptic number.

31112320003 is a deficient number, since it is larger than the sum of its proper divisors (355437).

31112320003 is a wasteful number, since it uses less digits than its factorization.

31112320003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355436.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31112320003 its reverse (30002321113), we get a palindrome (61114641116).

The spelling of 31112320003 in words is "thirty-one billion, one hundred twelve million, three hundred twenty thousand, three".