31343427 has 12 divisors (see below), whose sum is σ = 47937240. Its totient is φ = 19666368.

The previous prime is 31343423. The next prime is 31343441. The reversal of 31343427 is 72434313.

31343427 is a `hidden beast` number, since 313 + 4 + 342 + 7 = 666.

It is not a de Polignac number, because 31343427 - 2² = 31343423 is a prime.

It is a super-2 number, since 2×31343427² = 1964820832208658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31343427.

It is not an unprimeable number, because it can be changed into a prime (31343423) 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 11 ways as a sum of consecutive naturals, for example, 102277 + ... + 102582.

It is an arithmetic number, because the mean of its divisors is an integer number (3994770).

Almost surely, 2^31343427 is an apocalyptic number.

31343427 is a deficient number, since it is larger than the sum of its proper divisors (16593813).

31343427 is a wasteful number, since it uses less digits than its factorization.

31343427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204882 (or 204879 counting only the distinct ones).

The product of its digits is 6048, while the sum is 27.

The square root of 31343427 is about 5598.5200723048. The cubic root of 31343427 is about 315.2938452291.

It can be divided in two parts, 3134 and 3427, that added together give a 8-th power (6561 = 3⁸).

The spelling of 31343427 in words is "thirty-one million, three hundred forty-three thousand, four hundred twenty-seven".