31375055 has 16 divisors (see below), whose sum is σ = 38293344. Its totient is φ = 24675840.

The previous prime is 31375051. The next prime is 31375103. The reversal of 31375055 is 55057313.

It is not a de Polignac number, because 31375055 - 2² = 31375051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31375051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111515 + ... + 111795.

It is an arithmetic number, because the mean of its divisors is an integer number (2393334).

Almost surely, 2^31375055 is an apocalyptic number.

31375055 is a deficient number, since it is larger than the sum of its proper divisors (6918289).

31375055 is a wasteful number, since it uses less digits than its factorization.

31375055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586.

The product of its (nonzero) digits is 7875, while the sum is 29.

The square root of 31375055 is about 5601.3440351401. The cubic root of 31375055 is about 315.3998617303.

It can be divided in two parts, 3137 and 5055, that added together give a 13-th power (8192 = 2¹³).

The spelling of 31375055 in words is "thirty-one million, three hundred seventy-five thousand, fifty-five".