31112055 has 36 divisors (see below), whose sum is σ = 58409208. Its totient is φ = 15312960.

The previous prime is 31112051. The next prime is 31112083. The reversal of 31112055 is 55021113.

It is not a de Polignac number, because 31112055 - 2² = 31112051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5560 + ... + 9650.

It is an arithmetic number, because the mean of its divisors is an integer number (1622478).

Almost surely, 2^31112055 is an apocalyptic number.

31112055 is a deficient number, since it is larger than the sum of its proper divisors (27297153).

31112055 is a wasteful number, since it uses less digits than its factorization.

31112055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128 (or 4112 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 31112055 is about 5577.8181218107. The cubic root of 31112055 is about 314.5161126882.

Adding to 31112055 its reverse (55021113), we get a palindrome (86133168).

The spelling of 31112055 in words is "thirty-one million, one hundred twelve thousand, fifty-five".