31969090 has 8 divisors (see below), whose sum is σ = 57544380. Its totient is φ = 12787632.

The previous prime is 31969079. The next prime is 31969121. The reversal of 31969090 is 9096913.

It can be written as a sum of positive squares in 2 ways, for example, as 30946969 + 1022121 = 5563^2 + 1011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1598445 + ... + 1598464.

Almost surely, 2^31969090 is an apocalyptic number.

31969090 is a deficient number, since it is larger than the sum of its proper divisors (25575290).

31969090 is a wasteful number, since it uses less digits than its factorization.

31969090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196916.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 31969090 is about 5654.1215055922. The cubic root of 31969090 is about 317.3779554490.

The spelling of 31969090 in words is "thirty-one million, nine hundred sixty-nine thousand, ninety".