31225667 has 4 divisors (see below), whose sum is σ = 34064376. Its totient is φ = 28386960.

The previous prime is 31225661. The next prime is 31225673. The reversal of 31225667 is 76652213.

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

It is an interprime number because it is at equal distance from previous prime (31225661) and next prime (31225673).

It is a cyclic number.

It is not a de Polignac number, because 31225667 - 2⁶ = 31225603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31225661) 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, 1419338 + ... + 1419359.

It is an arithmetic number, because the mean of its divisors is an integer number (8516094).

Almost surely, 2^31225667 is an apocalyptic number.

31225667 is a deficient number, since it is larger than the sum of its proper divisors (2838709).

31225667 is a wasteful number, since it uses less digits than its factorization.

31225667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838708.

The product of its digits is 15120, while the sum is 32.

The square root of 31225667 is about 5587.9931102320. The cubic root of 31225667 is about 314.8984874881.

The spelling of 31225667 in words is "thirty-one million, two hundred twenty-five thousand, six hundred sixty-seven".