31838423771 has 16 divisors (see below), whose sum is σ = 39699098880. Its totient is φ = 24806386080.

The previous prime is 31838423741. The next prime is 31838423791. The reversal of 31838423771 is 17732483813.

It is a de Polignac number, because none of the positive numbers 2^k-31838423771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31838423741) 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 15 ways as a sum of consecutive naturals, for example, 915320 + ... + 949466.

It is an arithmetic number, because the mean of its divisors is an integer number (2481193680).

Almost surely, 2^31838423771 is an apocalyptic number.

31838423771 is a deficient number, since it is larger than the sum of its proper divisors (7860675109).

31838423771 is a wasteful number, since it uses less digits than its factorization.

31838423771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46274.

The product of its digits is 677376, while the sum is 47.

The spelling of 31838423771 in words is "thirty-one billion, eight hundred thirty-eight million, four hundred twenty-three thousand, seven hundred seventy-one".