31142498 has 8 divisors (see below), whose sum is σ = 46972380. Its totient is φ = 15485040.

The previous prime is 31142497. The next prime is 31142537. The reversal of 31142498 is 89424113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28376929 + 2765569 = 5327^2 + 1663^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31142497) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 42653 + ... + 43376.

Almost surely, 2^31142498 is an apocalyptic number.

31142498 is a deficient number, since it is larger than the sum of its proper divisors (15829882).

31142498 is a wasteful number, since it uses less digits than its factorization.

31142498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86212.

The product of its digits is 6912, while the sum is 32.

The square root of 31142498 is about 5580.5463890196. The cubic root of 31142498 is about 314.6186634277.

The spelling of 31142498 in words is "thirty-one million, one hundred forty-two thousand, four hundred ninety-eight".