31274051 has 4 divisors (see below), whose sum is σ = 31295232. Its totient is φ = 31252872.

The previous prime is 31274041. The next prime is 31274053. The reversal of 31274051 is 15047213.

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

It is a cyclic number.

It is not a de Polignac number, because 31274051 - 2⁶ = 31273987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31274053) 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, 8195 + ... + 11388.

It is an arithmetic number, because the mean of its divisors is an integer number (7823808).

Almost surely, 2^31274051 is an apocalyptic number.

31274051 is a deficient number, since it is larger than the sum of its proper divisors (21181).

31274051 is a wasteful number, since it uses less digits than its factorization.

31274051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21180.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 31274051 is about 5592.3207168402. The cubic root of 31274051 is about 315.0610480487.

The spelling of 31274051 in words is "thirty-one million, two hundred seventy-four thousand, fifty-one".