31054642 has 4 divisors (see below), whose sum is σ = 46581966. Its totient is φ = 15527320.

The previous prime is 31054637. The next prime is 31054649. The reversal of 31054642 is 24645013.

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., 16008001 + 15046641 = 4001^2 + 3879^2 .

It is not an unprimeable number, because it can be changed into a prime (31054649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7763659 + ... + 7763662.

Almost surely, 2^31054642 is an apocalyptic number.

31054642 is a deficient number, since it is larger than the sum of its proper divisors (15527324).

31054642 is a wasteful number, since it uses less digits than its factorization.

31054642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15527323.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 31054642 is about 5572.6691988669. The cubic root of 31054642 is about 314.3225282142.

Adding to 31054642 its reverse (24645013), we get a palindrome (55699655).

The spelling of 31054642 in words is "thirty-one million, fifty-four thousand, six hundred forty-two".