31355323043 has 8 divisors (see below), whose sum is σ = 34544479536. Its totient is φ = 28222612000.

The previous prime is 31355323033. The next prime is 31355323061. The reversal of 31355323043 is 34032355313.

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

It is not a de Polignac number, because 31355323043 - 2²⁴ = 31338545827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31355323033) 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 in 7 ways as a sum of consecutive naturals, for example, 14110196 + ... + 14112417.

It is an arithmetic number, because the mean of its divisors is an integer number (4318059942).

Almost surely, 2^31355323043 is an apocalyptic number.

31355323043 is a deficient number, since it is larger than the sum of its proper divisors (3189156493).

31355323043 is a wasteful number, since it uses less digits than its factorization.

31355323043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28222725.

The product of its (nonzero) digits is 48600, while the sum is 32.

Adding to 31355323043 its reverse (34032355313), we get a palindrome (65387678356).

The spelling of 31355323043 in words is "thirty-one billion, three hundred fifty-five million, three hundred twenty-three thousand, forty-three".