31071106 has 12 divisors (see below), whose sum is σ = 51229206. Its totient is φ = 14123120.

The previous prime is 31071101. The next prime is 31071107. The reversal of 31071106 is 60117013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21242881 + 9828225 = 4609^2 + 3135^2 .

It is not an unprimeable number, because it can be changed into a prime (31071101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63955 + ... + 64438.

Almost surely, 2^31071106 is an apocalyptic number.

31071106 is a deficient number, since it is larger than the sum of its proper divisors (20158100).

31071106 is a wasteful number, since it uses less digits than its factorization.

31071106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128417 (or 128406 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 31071106 is about 5574.1462126500. The cubic root of 31071106 is about 314.3780657174.

Adding to 31071106 its reverse (60117013), we get a palindrome (91188119).

The spelling of 31071106 in words is "thirty-one million, seventy-one thousand, one hundred six".