31883101 has 2 divisors, whose sum is σ = 31883102. Its totient is φ = 31883100.

The previous prime is 31883077. The next prime is 31883113. The reversal of 31883101 is 10138813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17214201 + 14668900 = 4149^2 + 3830^2 .

It is an emirp because it is prime and its reverse (10138813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31883101 - 2¹¹ = 31881053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31883141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15941550 + 15941551.

It is an arithmetic number, because the mean of its divisors is an integer number (15941551).

Almost surely, 2^31883101 is an apocalyptic number.

It is an amenable number.

31883101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31883101 is an equidigital number, since it uses as much as digits as its factorization.

31883101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 31883101 is about 5646.5122863587. The cubic root of 31883101 is about 317.0931436892.

The spelling of 31883101 in words is "thirty-one million, eight hundred eighty-three thousand, one hundred one".