31368842 has 8 divisors (see below), whose sum is σ = 49821156. Its totient is φ = 14761792.

The previous prime is 31368833. The next prime is 31368847. The reversal of 31368842 is 24886313.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31259281 + 109561 = 5591^2 + 331^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31368847) 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, 461273 + ... + 461340.

Almost surely, 2^31368842 is an apocalyptic number.

31368842 is a deficient number, since it is larger than the sum of its proper divisors (18452314).

31368842 is a wasteful number, since it uses less digits than its factorization.

31368842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922632.

The product of its digits is 27648, while the sum is 35.

The square root of 31368842 is about 5600.7894086459. The cubic root of 31368842 is about 315.3790414885.

The spelling of 31368842 in words is "thirty-one million, three hundred sixty-eight thousand, eight hundred forty-two".