31214467 has 4 divisors (see below), whose sum is σ = 31241056. Its totient is φ = 31187880.

The previous prime is 31214461. The next prime is 31214483. The reversal of 31214467 is 76441213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31214467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31214461) 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, 11448 + ... + 13909.

It is an arithmetic number, because the mean of its divisors is an integer number (7810264).

Almost surely, 2^31214467 is an apocalyptic number.

31214467 is a deficient number, since it is larger than the sum of its proper divisors (26589).

31214467 is a wasteful number, since it uses less digits than its factorization.

31214467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26588.

The product of its digits is 4032, while the sum is 28.

The square root of 31214467 is about 5586.9908716589. The cubic root of 31214467 is about 314.8608337975.

The spelling of 31214467 in words is "thirty-one million, two hundred fourteen thousand, four hundred sixty-seven".