31446669 has 4 divisors (see below), whose sum is σ = 41928896. Its totient is φ = 20964444.

The previous prime is 31446641. The next prime is 31446689. The reversal of 31446669 is 96664413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-31446669 is a prime.

It is a super-2 number, since 2×31446669² = 1977785982391122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31446689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5241109 + ... + 5241114.

It is an arithmetic number, because the mean of its divisors is an integer number (10482224).

Almost surely, 2^31446669 is an apocalyptic number.

It is an amenable number.

31446669 is a deficient number, since it is larger than the sum of its proper divisors (10482227).

31446669 is a wasteful number, since it uses less digits than its factorization.

31446669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10482226.

The product of its digits is 93312, while the sum is 39.

The square root of 31446669 is about 5607.7329643984. The cubic root of 31446669 is about 315.6396475769.

The spelling of 31446669 in words is "thirty-one million, four hundred forty-six thousand, six hundred sixty-nine".