31031302043 has 16 divisors (see below), whose sum is σ = 37197809664. Its totient is φ = 25328751840.

The previous prime is 31031302021. The next prime is 31031302051. The reversal of 31031302043 is 34020313013.

It is a de Polignac number, because none of the positive numbers 2^k-31031302043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31031302243) 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, 1262423 + ... + 1286768.

It is an arithmetic number, because the mean of its divisors is an integer number (2324863104).

Almost surely, 2^31031302043 is an apocalyptic number.

31031302043 is a deficient number, since it is larger than the sum of its proper divisors (6166507621).

31031302043 is a wasteful number, since it uses less digits than its factorization.

31031302043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549282.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31031302043 its reverse (34020313013), we get a palindrome (65051615056).

The spelling of 31031302043 in words is "thirty-one billion, thirty-one million, three hundred two thousand, forty-three".