31246042 has 4 divisors (see below), whose sum is σ = 46869066. Its totient is φ = 15623020.

The previous prime is 31246037. The next prime is 31246043. The reversal of 31246042 is 24064213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26532801 + 4713241 = 5151^2 + 2171^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (31246043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7811509 + ... + 7811512.

Almost surely, 2^31246042 is an apocalyptic number.

31246042 is a deficient number, since it is larger than the sum of its proper divisors (15623024).

31246042 is a wasteful number, since it uses less digits than its factorization.

31246042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15623023.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 31246042 is about 5589.8159182571. The cubic root of 31246042 is about 314.9669638655.

The spelling of 31246042 in words is "thirty-one million, two hundred forty-six thousand, forty-two".