31056427 has 4 divisors (see below), whose sum is σ = 31157896. Its totient is φ = 30954960.

The previous prime is 31056407. The next prime is 31056437. The reversal of 31056427 is 72465013.

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 31056427 - 2⁷ = 31056299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31056395 and 31056404.

It is not an unprimeable number, because it can be changed into a prime (31056407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50274 + ... + 50887.

It is an arithmetic number, because the mean of its divisors is an integer number (7789474).

Almost surely, 2^31056427 is an apocalyptic number.

31056427 is a deficient number, since it is larger than the sum of its proper divisors (101469).

31056427 is a wasteful number, since it uses less digits than its factorization.

31056427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101468.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 31056427 is about 5572.8293532101. The cubic root of 31056427 is about 314.3285504482.

The spelling of 31056427 in words is "thirty-one million, fifty-six thousand, four hundred twenty-seven".