47931101 has 2 divisors, whose sum is σ = 47931102. Its totient is φ = 47931100.

The previous prime is 47931077. The next prime is 47931127. The reversal of 47931101 is 10113974.

It is an a-pointer prime, because the next prime (47931127) can be obtained adding 47931101 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46308025 + 1623076 = 6805^2 + 1274^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47931101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47931131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23965550 + 23965551.

It is an arithmetic number, because the mean of its divisors is an integer number (23965551).

Almost surely, 2^47931101 is an apocalyptic number.

It is an amenable number.

47931101 is a deficient number, since it is larger than the sum of its proper divisors (1).

47931101 is an equidigital number, since it uses as much as digits as its factorization.

47931101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 47931101 is about 6923.2290876440. The cubic root of 47931101 is about 363.2501494798.

The spelling of 47931101 in words is "forty-seven million, nine hundred thirty-one thousand, one hundred one".