31206342 has 8 divisors (see below), whose sum is σ = 62412696. Its totient is φ = 10402112.

The previous prime is 31206317. The next prime is 31206353. The reversal of 31206342 is 24360213.

It is a happy number.

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

31206342 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2600523 + ... + 2600534.

It is an arithmetic number, because the mean of its divisors is an integer number (7801587).

Almost surely, 2^31206342 is an apocalyptic number.

31206342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31206342 is a wasteful number, since it uses less digits than its factorization.

31206342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201062.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 31206342 is about 5586.2636887279. The cubic root of 31206342 is about 314.8335124246.

Adding to 31206342 its reverse (24360213), we get a palindrome (55566555).

The spelling of 31206342 in words is "thirty-one million, two hundred six thousand, three hundred forty-two".