31021233043 has 2 divisors, whose sum is σ = 31021233044. Its totient is φ = 31021233042.

The previous prime is 31021233037. The next prime is 31021233077. The reversal of 31021233043 is 34033212013.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31021233043 is a prime.

It is not a weakly prime, because it can be changed into another prime (31021233343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510616521 + 15510616522.

It is an arithmetic number, because the mean of its divisors is an integer number (15510616522).

Almost surely, 2^31021233043 is an apocalyptic number.

31021233043 is a deficient number, since it is larger than the sum of its proper divisors (1).

31021233043 is an equidigital number, since it uses as much as digits as its factorization.

31021233043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31021233043 its reverse (34033212013), we get a palindrome (65054445056).

The spelling of 31021233043 in words is "thirty-one billion, twenty-one million, two hundred thirty-three thousand, forty-three".