31144055 has 8 divisors (see below), whose sum is σ = 37402992. Its totient is φ = 24895168.

The previous prime is 31144049. The next prime is 31144103. The reversal of 31144055 is 55044113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31144055 - 2⁴ = 31144039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31144055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9827 + ... + 12603.

It is an arithmetic number, because the mean of its divisors is an integer number (4675374).

Almost surely, 2^31144055 is an apocalyptic number.

31144055 is a deficient number, since it is larger than the sum of its proper divisors (6258937).

31144055 is a wasteful number, since it uses less digits than its factorization.

31144055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 31144055 is about 5580.6858897451. The cubic root of 31144055 is about 314.6239065641.

Adding to 31144055 its reverse (55044113), we get a palindrome (86188168).

The spelling of 31144055 in words is "thirty-one million, one hundred forty-four thousand, fifty-five".