31743146 has 4 divisors (see below), whose sum is σ = 47614722. Its totient is φ = 15871572.

The previous prime is 31743133. The next prime is 31743157. The reversal of 31743146 is 64134713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64134713 = 1627 ⋅39419.

It can be written as a sum of positive squares in only one way, i.e., 17598025 + 14145121 = 4195^2 + 3761^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7935785 + ... + 7935788.

Almost surely, 2^31743146 is an apocalyptic number.

31743146 is a deficient number, since it is larger than the sum of its proper divisors (15871576).

31743146 is a wasteful number, since it uses less digits than its factorization.

31743146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15871575.

The product of its digits is 6048, while the sum is 29.

The square root of 31743146 is about 5634.1056078139. The cubic root of 31743146 is about 316.6284893341.

Adding to 31743146 its reverse (64134713), we get a palindrome (95877859).

The spelling of 31743146 in words is "thirty-one million, seven hundred forty-three thousand, one hundred forty-six".