31314949 has 4 divisors (see below), whose sum is σ = 31625100. Its totient is φ = 31004800.

The previous prime is 31314947. The next prime is 31314953. The reversal of 31314949 is 94941313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13616100 + 17698849 = 3690^2 + 4207^2 .

It is a cyclic number.

It is not a de Polignac number, because 31314949 - 2¹ = 31314947 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 (31314947) 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 3 ways as a sum of consecutive naturals, for example, 154924 + ... + 155125.

It is an arithmetic number, because the mean of its divisors is an integer number (7906275).

Almost surely, 2^31314949 is an apocalyptic number.

It is an amenable number.

31314949 is a deficient number, since it is larger than the sum of its proper divisors (310151).

31314949 is a wasteful number, since it uses less digits than its factorization.

31314949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310150.

The product of its digits is 11664, while the sum is 34.

The square root of 31314949 is about 5595.9761436232. The cubic root of 31314949 is about 315.1983264371.

The spelling of 31314949 in words is "thirty-one million, three hundred fourteen thousand, nine hundred forty-nine".