20131346 has 8 divisors (see below), whose sum is σ = 30241740. Its totient is φ = 10050768.

The previous prime is 20131339. The next prime is 20131373. The reversal of 20131346 is 64313102.

It can be written as a sum of positive squares in 2 ways, for example, as 19758025 + 373321 = 4445^2 + 611^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5681 + ... + 8516.

Almost surely, 2^20131346 is an apocalyptic number.

20131346 is a deficient number, since it is larger than the sum of its proper divisors (10110394).

20131346 is a wasteful number, since it uses less digits than its factorization.

20131346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14908.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20131346 is about 4486.7968529899. The cubic root of 20131346 is about 272.0346787532.

Adding to 20131346 its reverse (64313102), we get a palindrome (84444448).

The spelling of 20131346 in words is "twenty million, one hundred thirty-one thousand, three hundred forty-six".