31078949 has 8 divisors (see below), whose sum is σ = 33955392. Its totient is φ = 28211040.

The previous prime is 31078933. The next prime is 31078961. The reversal of 31078949 is 94987013.

It is a happy number.

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

It is not a de Polignac number, because 31078949 - 2⁴ = 31078933 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 (31078909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7337 + ... + 10769.

It is an arithmetic number, because the mean of its divisors is an integer number (4244424).

Almost surely, 2^31078949 is an apocalyptic number.

It is an amenable number.

31078949 is a deficient number, since it is larger than the sum of its proper divisors (2876443).

31078949 is a wasteful number, since it uses less digits than its factorization.

31078949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 31078949 is about 5574.8496840722. The cubic root of 31078949 is about 314.4045153685.

The spelling of 31078949 in words is "thirty-one million, seventy-eight thousand, nine hundred forty-nine".