31123532263 has 8 divisors (see below), whose sum is σ = 32085723600. Its totient is φ = 30171011520.

The previous prime is 31123532249. The next prime is 31123532267. The reversal of 31123532263 is 36223532113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31123532263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123532267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2411113 + ... + 2423986.

It is an arithmetic number, because the mean of its divisors is an integer number (4010715450).

Almost surely, 2^31123532263 is an apocalyptic number.

31123532263 is a deficient number, since it is larger than the sum of its proper divisors (962191337).

31123532263 is a wasteful number, since it uses less digits than its factorization.

31123532263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4835297.

The product of its digits is 19440, while the sum is 31.

The spelling of 31123532263 in words is "thirty-one billion, one hundred twenty-three million, five hundred thirty-two thousand, two hundred sixty-three".